CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Windows Media Audio - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"88e51943-3a53-4137-8744-51972b018ee6","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Windows_Media_Audio","wgTitle":"Windows Media Audio","wgCurRevisionId":1276452729,"wgRevisionId":1276452729,"wgArticleId":34082,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Webarchive template wayback links","All articles with dead external links","Articles with dead external links from August 2018","Articles with permanently dead external links","Articles with short description","Short description matches Wikidata","All articles with unsourced statements","Articles with unsourced statements from April 2021","Articles with unsourced statements from May 2010","Articles with dead external links from August 2019", "Articles with unsourced statements from January 2016","Articles with unsourced statements from March 2012","Audio codecs","Audio file formats","Microsoft proprietary codecs","Windows audio"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Windows_Media_Audio","wgRelevantArticleId":34082,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":50000,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage" ,"wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q2194","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=[ "ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.17"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Windows Media Audio - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Windows_Media_Audio"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Windows_Media_Audio&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Windows_Media_Audio"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Windows_Media_Audio rootpage-Windows_Media_Audio skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" title="Main menu" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li><li id="n-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages"><span>Special pages</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Windows+Media+Audio" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Windows+Media+Audio" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Windows+Media+Audio" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Windows+Media+Audio" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Development_history" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Development_history"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Development history</span> </div> </a> <ul id="toc-Development_history-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Container_format" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Container_format"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Container format</span> </div> </a> <ul id="toc-Container_format-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Codecs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Codecs"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Codecs</span> </div> </a> <button aria-controls="toc-Codecs-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Codecs subsection</span> </button> <ul id="toc-Codecs-sublist" class="vector-toc-list"> <li id="toc-Windows_Media_Audio" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Windows_Media_Audio"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Windows Media Audio</span> </div> </a> <ul id="toc-Windows_Media_Audio-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Windows_Media_Audio_Professional" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Windows_Media_Audio_Professional"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Windows Media Audio Professional</span> </div> </a> <ul id="toc-Windows_Media_Audio_Professional-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Windows_Media_Audio_Lossless" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Windows_Media_Audio_Lossless"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Windows Media Audio Lossless</span> </div> </a> <ul id="toc-Windows_Media_Audio_Lossless-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Windows_Media_Audio_Voice" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Windows_Media_Audio_Voice"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.4</span> <span>Windows Media Audio Voice</span> </div> </a> <ul id="toc-Windows_Media_Audio_Voice-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Sound_quality" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sound_quality"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Sound quality</span> </div> </a> <button aria-controls="toc-Sound_quality-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Sound quality subsection</span> </button> <ul id="toc-Sound_quality-sublist" class="vector-toc-list"> <li id="toc-Criticism_of_claimed_quality" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Criticism_of_claimed_quality"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Criticism of claimed quality</span> </div> </a> <ul id="toc-Criticism_of_claimed_quality-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Players" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Players"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Players</span> </div> </a> <ul id="toc-Players-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Encoders" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Encoders"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Encoders</span> </div> </a> <ul id="toc-Encoders-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Digital_rights_management" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Digital_rights_management"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Digital rights management</span> </div> </a> <ul id="toc-Digital_rights_management-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Windows Media Audio</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 30 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-30" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">30 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D8%B8%D8%A7%D9%85_%D9%88%D9%8A%D9%86%D8%AF%D9%88%D8%B2_%D8%A7%D9%84%D8%B5%D9%88%D8%AA%D9%8A" title="نظام ويندوز الصوتي – Arabic" lang="ar" hreflang="ar" data-title="نظام ويندوز الصوتي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Bulgarian" lang="bg" hreflang="bg" data-title="Windows Media Audio" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Catalan" lang="ca" hreflang="ca" data-title="Windows Media Audio" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Czech" lang="cs" hreflang="cs" data-title="Windows Media Audio" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Danish" lang="da" hreflang="da" data-title="Windows Media Audio" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – German" lang="de" hreflang="de" data-title="Windows Media Audio" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Spanish" lang="es" hreflang="es" data-title="Windows Media Audio" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – French" lang="fr" hreflang="fr" data-title="Windows Media Audio" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9C%88%EB%8F%84%EC%9A%B0_%EB%AF%B8%EB%94%94%EC%96%B4_%EC%98%A4%EB%94%94%EC%98%A4" title="윈도우 미디어 오디오 – Korean" lang="ko" hreflang="ko" data-title="윈도우 미디어 오디오" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Armenian" lang="hy" hreflang="hy" data-title="Windows Media Audio" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Indonesian" lang="id" hreflang="id" data-title="Windows Media Audio" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Italian" lang="it" hreflang="it" data-title="Windows Media Audio" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-pam mw-list-item"><a href="https://pam.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Pampanga" lang="pam" hreflang="pam" data-title="Windows Media Audio" data-language-autonym="Kapampangan" data-language-local-name="Pampanga" class="interlanguage-link-target"><span>Kapampangan</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Hungarian" lang="hu" hreflang="hu" data-title="Windows Media Audio" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Dutch" lang="nl" hreflang="nl" data-title="Windows Media Audio" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Japanese" lang="ja" hreflang="ja" data-title="Windows Media Audio" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Windows Media Audio" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Polish" lang="pl" hreflang="pl" data-title="Windows Media Audio" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Portuguese" lang="pt" hreflang="pt" data-title="Windows Media Audio" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Russian" lang="ru" hreflang="ru" data-title="Windows Media Audio" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/WMA" title="WMA – Simple English" lang="en-simple" hreflang="en-simple" data-title="WMA" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Slovak" lang="sk" hreflang="sk" data-title="Windows Media Audio" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Finnish" lang="fi" hreflang="fi" data-title="Windows Media Audio" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Swedish" lang="sv" hreflang="sv" data-title="Windows Media Audio" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Turkish" lang="tr" hreflang="tr" data-title="Windows Media Audio" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/WMA" title="WMA – Ukrainian" lang="uk" hreflang="uk" data-title="WMA" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Vietnamese" lang="vi" hreflang="vi" data-title="Windows Media Audio" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Yoruba" lang="yo" hreflang="yo" data-title="Windows Media Audio" data-language-autonym="Yorùbá" data-language-local-name="Yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/WMA" title="WMA – Cantonese" lang="yue" hreflang="yue" data-title="WMA" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/Windows_Media_Audio" title="Windows Media Audio – Chinese" lang="zh" hreflang="zh" data-title="Windows Media Audio" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2194#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Windows_Media_Audio" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Windows_Media_Audio" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Windows_Media_Audio"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Windows_Media_Audio"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Windows_Media_Audio" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Windows_Media_Audio" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&oldid=1276452729" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Windows_Media_Audio&id=1276452729&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FWindows_Media_Audio"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FWindows_Media_Audio"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Windows_Media_Audio&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Windows_Media_Audio&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2194" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Audio data compression technology</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">This article is about audio encoding and decoding software. For the container file format, see <a href="/wiki/.wma" class="mw-redirect" title=".wma">.wma</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title" style="padding-bottom: 0.15em;">Windows Media Audio</caption><tbody><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/Filename_extension" title="Filename extension">Filename extension</a></th><td class="infobox-data" style="line-height: 1.35;"><style data-mw-deduplicate="TemplateStyles:r886049734">.mw-parser-output .monospaced{font-family:monospace,monospace}</style><div class="monospaced"> .wma</div></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/Media_type" title="Media type">Internet media type</a></th><td class="infobox-data" style="line-height: 1.35;">audio/x-ms-wma</td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Developed by</th><td class="infobox-data" style="line-height: 1.35;"><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Initial release</th><td class="infobox-data" style="line-height: 1.35;">August 17, 1999<span class="noprint">; 25 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1999-08-17</span>)</span><sup id="cite_ref-wmt4-release_1-0" class="reference"><a href="#cite_note-wmt4-release-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Type of format</th><td class="infobox-data" style="line-height: 1.35;"><a href="/wiki/Audio_file_format" title="Audio file format">Audio</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><span class="nowrap"><a href="/wiki/Open_file_format" title="Open file format">Open format</a>?</span></th><td class="infobox-data" style="line-height: 1.35;">No</td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><span class="nowrap"><a href="/wiki/Open_standard#Comparison_of_definitions" title="Open standard">Free format</a>?</span></th><td class="infobox-data" style="line-height: 1.35;">No</td></tr></tbody></table> <p><b>Windows Media Audio</b> (<b>WMA</b>) is a series of <a href="/wiki/Audio_codec" title="Audio codec">audio codecs</a> and their corresponding <a href="/wiki/Audio_coding_format" title="Audio coding format">audio coding formats</a> developed by <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. It is a <a href="/wiki/Proprietary_software" title="Proprietary software">proprietary</a> technology that forms part of the <a href="/wiki/Windows_Media" title="Windows Media">Windows Media</a> framework. WMA consists of four distinct codecs. The original WMA codec, known simply as <i>WMA</i>, was conceived as a competitor to the popular <a href="/wiki/MP3" title="MP3">MP3</a> and <a href="/wiki/RealAudio" title="RealAudio">RealAudio</a> codecs.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-RealNetworks_MSAudio_Analysis_3-0" class="reference"><a href="#cite_note-RealNetworks_MSAudio_Analysis-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <i>WMA Pro</i>, a newer and more advanced codec, supports <a href="/wiki/Surround_sound" title="Surround sound">multichannel</a> and <a href="/wiki/High-resolution_audio" title="High-resolution audio">high-resolution audio</a>.<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-0" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> A <a href="/wiki/Lossless_compression" title="Lossless compression">lossless codec</a>, <i>WMA Lossless</i>, compresses audio data without loss of audio fidelity (the regular WMA format is <a href="/wiki/Lossy_compression" title="Lossy compression">lossy</a>).<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-1" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <i>WMA Voice</i>, targeted at voice content, applies compression using a range of low <a href="/wiki/Bit_rate" title="Bit rate">bit rates</a>.<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-2" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Microsoft has also developed a <a href="/wiki/Digital_container_format" class="mw-redirect" title="Digital container format">digital container format</a> called <a href="/wiki/Advanced_Systems_Format" title="Advanced Systems Format">Advanced Systems Format</a> to store audio encoded by WMA. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Development_history">Development history</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=1" title="Edit section: Development history"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The first WMA <a href="/wiki/Codec" title="Codec">codec</a> was based on earlier work by <a href="/wiki/Henrique_Malvar" class="mw-redirect" title="Henrique Malvar">Henrique Malvar</a> and his team which was transferred to the Windows Media team at Microsoft.<sup id="cite_ref-Henrique_Malvar_brazilmax.com_5-0" class="reference"><a href="#cite_note-Henrique_Malvar_brazilmax.com-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Malvar was a senior researcher and manager of the Signal Processing Group at <a href="/wiki/Microsoft_Research" title="Microsoft Research">Microsoft Research</a>,<sup id="cite_ref-Microsoft_Research_Henrique_Malvar_6-0" class="reference"><a href="#cite_note-Microsoft_Research_Henrique_Malvar-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> whose team worked on the <i>MSAudio</i> project.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The first finalized codec was initially referred to as <i>MSAudio 4.0</i>.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> It was later officially released as <i>Windows Media Audio</i>,<sup id="cite_ref-wmt4-release_1-1" class="reference"><a href="#cite_note-wmt4-release-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> as part of Windows Media Technologies 4.0. Microsoft claimed that WMA could produce files that were half the size of equivalent-quality MP3 files;<sup id="cite_ref-Microsoft_TechNet_MS_Windows_Media_Technologies_Features_10-0" class="reference"><a href="#cite_note-Microsoft_TechNet_MS_Windows_Media_Technologies_Features-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Microsoft also claimed that WMA delivered "near CD-quality" audio at 64 kbit/s.<sup id="cite_ref-Microsoft_TechNet_MS_Windows_Media_Technologies_Features_10-1" class="reference"><a href="#cite_note-Microsoft_TechNet_MS_Windows_Media_Technologies_Features-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> The former claim however was rejected by some <a href="/wiki/Audiophile" title="Audiophile">audiophiles</a><sup id="cite_ref-EDN_Internet_Radio_11-0" class="reference"><a href="#cite_note-EDN_Internet_Radio-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> and both claims have been refuted through publicly-available <a href="/wiki/Codec_listening_test" title="Codec listening test">codec listening tests</a>. <a href="/wiki/RealNetworks" title="RealNetworks">RealNetworks</a> also challenged Microsoft's claims regarding WMA's superior audio quality compared to RealAudio.<sup id="cite_ref-RealNetworks_MSAudio_Analysis_3-1" class="reference"><a href="#cite_note-RealNetworks_MSAudio_Analysis-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Newer versions of WMA became available: <i>Windows Media Audio 2</i> in 1999,<sup id="cite_ref-Broadcom_12-0" class="reference"><a href="#cite_note-Broadcom-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> <i>Windows Media Audio 7</i> in 2000,<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> <i>Windows Media Audio 8</i> in 2001,<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> and <i>Windows Media Audio 9</i> in 2003.<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-3" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Microsoft first announced its plans to license WMA technology to third parties in 1999.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> Prior to <a href="/wiki/Windows_XP" title="Windows XP">Windows XP</a>, WMA files were primarily streamed using the Windows Media Source Filter (<a href="/wiki/DirectShow" title="DirectShow">DirectShow</a> codec), later being removed in Windows Vista with the addition of Media Foundation.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Although earlier versions of <a href="/wiki/Windows_Media_Player" title="Windows Media Player">Windows Media Player</a> played WMA files, support for WMA file creation was not added until the seventh version.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> In 2003, Microsoft released new audio codecs that were not compatible with the original WMA codec. These codecs were <i>Windows Media Audio 9 Professional</i>,<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-4" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <i>Windows Media Audio 9 Lossless</i>,<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-5" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and <i>Windows Media Audio 9 Voice</i>.<sup id="cite_ref-Windows_Media_9_Series_Whitepaper_4-6" class="reference"><a href="#cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>All versions of WMA released since version 9.0 – namely 9.1, 9.2, and 10 – have been backwards compatible with the original v9 decoder and are therefore not considered separate codecs. The sole exception to this is the WMA 10 Professional codec whose Low Bit Rate (LBR) mode is only backwards compatible with the older WMA Professional decoders at a half sampling rate (similar to how HE-AAC is backwards compatible with AAC-LC). Full fidelity decoding of WMA 10 Professional LBR bitstreams requires a WMA version 10 or newer decoder. </p> <div class="mw-heading mw-heading2"><h2 id="Container_format">Container format</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=2" title="Edit section: Container format"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Advanced_Systems_Format" title="Advanced Systems Format">Advanced Systems Format</a></div> <p>A WMA file is in most circumstances contained in the <a href="/wiki/Advanced_Systems_Format" title="Advanced Systems Format">Advanced Systems Format</a> (ASF), a <a href="/wiki/Proprietary_software" title="Proprietary software">proprietary</a> Microsoft <a href="/wiki/Container_format_(digital)" class="mw-redirect" title="Container format (digital)">container format</a> for <a href="/wiki/Digital_audio" title="Digital audio">digital audio</a> or <a href="/wiki/Digital_video" title="Digital video">digital video</a>.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> The ASF container format specifies how <a href="/wiki/Metadata_(computing)" class="mw-redirect" title="Metadata (computing)">metadata</a> about the file is to be encoded, similar to the <a href="/wiki/ID3" title="ID3">ID3</a> tags used by MP3 files. Metadata may include song name, track number, artist name, and also <a href="/wiki/Audio_normalization" title="Audio normalization">audio normalization</a> values. This container can optionally support <a href="/wiki/Digital_rights_management" title="Digital rights management">digital rights management</a> (DRM) using a combination of <a href="/wiki/Elliptic_curve_cryptography" class="mw-redirect" title="Elliptic curve cryptography">elliptic curve cryptography</a> key exchange, <a href="/wiki/Data_Encryption_Standard" title="Data Encryption Standard">DES</a> block cipher, a custom block cipher, <a href="/wiki/RC4_cipher" class="mw-redirect" title="RC4 cipher">RC4</a> stream cipher and the <a href="/wiki/SHA-1" title="SHA-1">SHA-1</a> hashing function. See <a href="/wiki/Windows_Media_DRM" title="Windows Media DRM">Windows Media DRM</a> for further information. </p><p>Since 2008 Microsoft has also been using WMA Professional in its Protected Interoperable File Format (PIFF) based on the <a href="/wiki/ISO_base_media_file_format" title="ISO base media file format">ISO Base Media File Format</a> and most commonly used for Smooth Streaming, a form of adaptive bitrate streaming over HTTP. Related industry standards such as DECE <a href="/wiki/UltraViolet_(system)" class="mw-redirect" title="UltraViolet (system)">UltraViolet</a> and <a href="/wiki/MPEG-DASH" class="mw-redirect" title="MPEG-DASH">MPEG-DASH</a> have not standardized WMA as a supported audio codec, deciding in favor of the more industry-prevalent MPEG and Dolby audio codecs. </p> <div class="mw-heading mw-heading2"><h2 id="Codecs">Codecs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=3" title="Edit section: Codecs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Each WMA file features a single audio track in one of the four sub-formats: WMA, WMA Pro, WMA Lossless, or WMA Voice. These formats are implemented differently from one another, such that they are technically distinct and mutually incompatible; that is to say, a device or software compatible with one sub-format does not therefore automatically support any of the other codecs. Each codec is further explained below. </p> <div class="mw-heading mw-heading3"><h3 id="Windows_Media_Audio">Windows Media Audio</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=4" title="Edit section: Windows Media Audio"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>Windows Media Audio</b> (WMA) is the most common codec of the four WMA codecs. The colloquial usage of the term <i>WMA</i>, especially in marketing materials and device specifications, usually refers to this codec only. The first version of the codec released in 1999 is regarded as WMA 1. In the same year, the <a href="/wiki/Bit_stream" class="mw-redirect" title="Bit stream">bit stream</a> syntax, or <a href="/wiki/Compression_algorithm" class="mw-redirect" title="Compression algorithm">compression algorithm</a>, was altered in minor ways and became WMA 2.<sup id="cite_ref-Broadcom_12-1" class="reference"><a href="#cite_note-Broadcom-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Since then, newer versions of the codec have been released, but the decoding process remained the same, ensuring compatibility between codec versions.<sup id="cite_ref-Broadcom_12-2" class="reference"><a href="#cite_note-Broadcom-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> WMA is a lossy audio codec based on the study of <a href="/wiki/Psychoacoustics" title="Psychoacoustics">psychoacoustics</a>. Audio signals that are deemed to be imperceptible to the human ear are encoded with reduced resolution during the compression process. </p><p>WMA can encode audio signals sampled at up to 48 <a href="/wiki/KHz" class="mw-redirect" title="KHz">kHz</a> with up to two discrete channels (<a href="/wiki/Stereo" class="mw-redirect" title="Stereo">stereo</a>). WMA 9 introduced <a href="/wiki/Variable_bit_rate" class="mw-redirect" title="Variable bit rate">variable bit rate</a> (VBR) and <a href="/wiki/Average_bit_rate" class="mw-redirect" title="Average bit rate">average bit rate</a> (ABR) coding techniques into the MS encoder although both were technically supported by the original format.<sup id="cite_ref-Broadcom_12-3" class="reference"><a href="#cite_note-Broadcom-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> WMA 9.1 also added support for low-delay audio,<sup id="cite_ref-Low-Delay_Audio_19-0" class="reference"><a href="#cite_note-Low-Delay_Audio-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> which reduces <a href="/wiki/Latency_(engineering)" title="Latency (engineering)">latency</a> for encoding and decoding. </p><p>Fundamentally, WMA is a transform coder based on <a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">modified discrete cosine transform</a> (MDCT), somewhat similar to <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a>, <a href="/wiki/Cook_Codec" title="Cook Codec">Cook</a> and <a href="/wiki/Vorbis" title="Vorbis">Vorbis</a>. The bit stream of WMA is composed of superframes, each containing 1 or more frames of 2048 samples. If the bit reservoir is not used, a frame is equal to a superframe. Each frame contains several blocks, which are 128, 256, 512, 1024, or 2048 samples long after being transformed into the frequency domain via the MDCT. In the frequency domain, masking for the transformed samples is determined, and then used to requantize the samples. Finally, the <a href="/wiki/Floating_point" class="mw-redirect" title="Floating point">floating point</a> samples are decomposed into coefficient and exponent parts and independently <a href="/wiki/Huffman_coding" title="Huffman coding">huffman coded</a>. Stereo information is typically <a href="/wiki/Joint_stereo#M/S_stereo_coding" class="mw-redirect" title="Joint stereo">mid/side</a> coded. At low bit rates, <a href="/wiki/Line_spectral_pairs" title="Line spectral pairs">line spectral pairs</a> (typically less than 17 kbit/s) and a form of noise coding (typically less than 33 kbit/s) can also be used to improve quality. </p><p>Like AAC and Ogg Vorbis, WMA was intended to address perceived deficiencies in the MP3 standard. Given their common design goals, the three formats ended up making similar design choices. All three are pure transform codecs. Furthermore, the MDCT implementation used in WMA is essentially a superset of those used in Ogg and AAC such that WMA iMDCT and windowing routines can be used to decode AAC and Ogg Vorbis almost unmodified. However, quantization and stereo coding is handled differently in each codec. The primary distinguishing trait of the WMA Standard format is its unique use of 5 different block sizes, compared to MP3, AAC, and Ogg Vorbis which each restrict files to just two sizes. WMA Pro extends this by adding a 6th block size used at 88.2/96 kHz sampling rate. </p><p>Certified <a href="/wiki/PlaysForSure" class="mw-redirect" title="PlaysForSure">PlaysForSure</a> devices, as well as a large number of uncertified devices, ranging from portable hand-held music players to set-top <a href="/wiki/DVD_player" title="DVD player">DVD players</a>, support the playback of WMA files. Most PlaysForSure-certified online stores distribute content using this codec only. In 2005, <a href="/wiki/Nokia" title="Nokia">Nokia</a> announced its plans to support WMA playback in future Nokia handsets.<sup id="cite_ref-nokia_20-0" class="reference"><a href="#cite_note-nokia-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> In the same year, an update was made available for the <a href="/wiki/PlayStation_Portable" title="PlayStation Portable">PlayStation Portable</a> (version 2.60) which allowed WMA files to be played on the device for the first time.<sup id="cite_ref-PSP_Review_21-0" class="reference"><a href="#cite_note-PSP_Review-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Windows_Media_Audio_Professional">Windows Media Audio Professional</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=5" title="Edit section: Windows Media Audio Professional"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:WMA10ProOptions.PNG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/d/d3/WMA10ProOptions.PNG/220px-WMA10ProOptions.PNG" decoding="async" width="220" height="219" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/d/d3/WMA10ProOptions.PNG 1.5x" data-file-width="320" data-file-height="319" /></a><figcaption>Screenshot of Windows Media Encoder 9 Series, displaying new encoding options for Windows Media Audio 10 Professional.</figcaption></figure> <p><b>Windows Media Audio Professional</b> (WMA Pro) is an improved lossy codec closely related to WMA standards. It retains most of the same general coding features, but also features improved entropy coding and quantization strategies as well as more efficient stereo coding. Notably, many of the WMA standard's low bitrate features have been removed, as the core codec is designed for efficient coding at most bitrates. Its main competitors include <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a>, <a href="/wiki/HE-AAC" class="mw-redirect" title="HE-AAC">HE-AAC</a>, <a href="/wiki/Vorbis" title="Vorbis">Vorbis</a>, Dolby Digital, and DTS. It supports 16-bit and 24-bit sample bit depth, sampling rates up to 96 kHz, and up to eight discrete channels (<a href="/wiki/7.1" class="mw-redirect" title="7.1">7.1 channel surround</a>).<sup id="cite_ref-Windows_Media_Audio_9_Professional_22-0" class="reference"><a href="#cite_note-Windows_Media_Audio_9_Professional-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> WMA Pro also supports <a href="/wiki/Dynamic_range_compression" title="Dynamic range compression">dynamic range compression</a>, which reduces the volume difference between the loudest and quietest sounds in the audio track. According to Microsoft's Amir Majidimehr, WMA Pro could theoretically go beyond 7.1 surround sound and support "an unlimited number of channels"; however, Microsoft chose to limit its current capability to eight (7.1 discrete channels).<sup id="cite_ref-winsupersite_23-0" class="reference"><a href="#cite_note-winsupersite-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </p><p>The codec's bit stream syntax was frozen at the first version, WMA 9 Pro.<sup id="cite_ref-wmav9series_24-0" class="reference"><a href="#cite_note-wmav9series-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> Later versions of WMA Pro introduced low-bit rate encoding, low-delay audio,<sup id="cite_ref-wmalowdelay_25-0" class="reference"><a href="#cite_note-wmalowdelay-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> frequency interpolation mode,<sup id="cite_ref-streamingmedia.com_Windows_Media_Best_Practices_26-0" class="reference"><a href="#cite_note-streamingmedia.com_Windows_Media_Best_Practices-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> and an expanded range of <a href="/wiki/Sampling_rate" class="mw-redirect" title="Sampling rate">sampling rate</a> and <a href="/wiki/Audio_bit_depth" title="Audio bit depth">bit-depth</a> encoding options. A WMA 10 Pro file compressed with frequency interpolation mode comprises a WMA 9 Pro track encoded at half the original sampling rate, which is then restored using a new compression algorithm.<sup id="cite_ref-edn_27-0" class="reference"><a href="#cite_note-edn-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> In this situation, WMA 9 Pro players which have not been updated to the WMA 10 Pro codec can only decode the lower quality WMA 9 Pro stream. Starting with WMA 10 Pro, eight channel encoding starts at 128 kbit/s, and tracks can be encoded at the native audio CD resolution (44.1 kHz, 16-bit), previously the domain of WMA Standard. </p><p>Despite a growing number of supported devices and its superiority over WMA, WMA Pro still has little hardware and software support. Some notable exceptions to this are the <a href="/wiki/Microsoft_Zune" class="mw-redirect" title="Microsoft Zune">Microsoft Zune</a> (limited to stereo),<sup id="cite_ref-zunefaq_28-0" class="reference"><a href="#cite_note-zunefaq-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Xbox_360" title="Xbox 360">Xbox 360</a>,<sup id="cite_ref-xboxfaq_29-0" class="reference"><a href="#cite_note-xboxfaq-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Windows_Mobile" title="Windows Mobile">Windows Mobile</a>-powered devices with Windows Media Player 10 Mobile,<sup id="cite_ref-winmobilefaq_30-0" class="reference"><a href="#cite_note-winmobilefaq-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> newer <a href="/wiki/Gigabeat" title="Gigabeat">Toshiba Gigabeat</a> and <a href="/wiki/Motorola" title="Motorola">Motorola</a> devices,<sup id="cite_ref-msmotorolawmapro_31-0" class="reference"><a href="#cite_note-msmotorolawmapro-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-digitallifestyles_32-0" class="reference"><a href="#cite_note-digitallifestyles-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> and devices running recent versions of the <a href="/wiki/Rockbox" title="Rockbox">Rockbox</a> alternative firmware.<sup id="cite_ref-rockbox_33-0" class="reference"><a href="#cite_note-rockbox-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> In addition, WMA Pro is a requirement for the <a href="/wiki/WMV_HD" title="WMV HD">WMV HD</a> certification program.<sup id="cite_ref-wmvhd_34-0" class="reference"><a href="#cite_note-wmvhd-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> On the software side, <a href="/wiki/Verizon" title="Verizon">Verizon</a> utilizes WMA 10 Pro for its V CAST Music Service,<sup id="cite_ref-verizonwmapro_35-0" class="reference"><a href="#cite_note-verizonwmapro-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> and <a href="/wiki/Windows_Media_Player" title="Windows Media Player">Windows Media Player 11</a> has promoted the codec as an alternative to WMA for copying audio CD tracks.<sup id="cite_ref-winvistawmp11_36-0" class="reference"><a href="#cite_note-winvistawmp11-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> WMA Pro is supported in Silverlight as of version 2 (though only in stereo mode). In the absence of the appropriate audio hardware, WMA Pro can automatically <a href="/wiki/Downmixing" class="mw-redirect" title="Downmixing">downmix</a> multichannel audio to stereo or <a href="/wiki/Monophonic_sound" class="mw-redirect" title="Monophonic sound">mono</a>, and 24-bit resolution to 16-bit during playback. </p><p>A notable example of WMA Pro being used instead of WMA Standard is the NBC Olympics website which uses WMA 10 Pro in its low-bitrate mode at 48 kbit/s.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (April 2021)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="Windows_Media_Audio_Lossless">Windows Media Audio Lossless</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=6" title="Edit section: Windows Media Audio Lossless"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:5_1_channels_(surround_sound)_label.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/5_1_channels_%28surround_sound%29_label.svg/220px-5_1_channels_%28surround_sound%29_label.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/5_1_channels_%28surround_sound%29_label.svg/330px-5_1_channels_%28surround_sound%29_label.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cc/5_1_channels_%28surround_sound%29_label.svg/440px-5_1_channels_%28surround_sound%29_label.svg.png 2x" data-file-width="1000" data-file-height="1000" /></a><figcaption>Label for 5.1 surround sound, the maximum channel configuration for Windows Media Audio Lossless.</figcaption></figure> <p><b>Windows Media Audio 9 Lossless</b> is a <a href="/wiki/Lossless_audio" class="mw-redirect" title="Lossless audio">lossless</a> incarnation of Windows Media Audio, an <a href="/wiki/Audio_codec" title="Audio codec">audio codec</a> by <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>, released in early 2003. It compresses an audio CD to a range of 206 to 411 MB, at bit rates of 470 to 940 kbit/s. The result is a bit-for-bit duplicate of the original audio file; in other words, the audio quality on the CD will be the same as the file when played back. WMA Lossless uses the same .WMA file extension as other Windows Media Audio formats. It supports 6 discrete channels and up to 24-bit/96 kHz lossless audio. The format has never been publicly documented, although an open-source decoder has been reverse-engineered for non-Microsoft platforms by the <a href="/wiki/Libav" title="Libav">libav</a> and <a href="/wiki/FFmpeg" title="FFmpeg">ffmpeg</a> projects. </p><p><b>Windows Media Audio Lossless</b> (WMA Lossless) is a lossless audio codec that competes with <a href="/wiki/ATRAC" title="ATRAC">ATRAC</a> Advanced Lossless, <a href="/wiki/Dolby_TrueHD" title="Dolby TrueHD">Dolby TrueHD</a>, <a href="/wiki/DTS-HD_Master_Audio" title="DTS-HD Master Audio">DTS-HD Master Audio</a>, <a href="/wiki/Shorten_(file_format)" class="mw-redirect" title="Shorten (file format)">Shorten</a>, <a href="/wiki/Monkey%27s_Audio" title="Monkey's Audio">Monkey's Audio</a>, <a href="/wiki/FLAC" title="FLAC">FLAC</a>, <a href="/wiki/Apple_Lossless" class="mw-redirect" title="Apple Lossless">Apple Lossless</a>, and <a href="/wiki/WavPack" title="WavPack">WavPack</a> (Since late 2011,<sup id="cite_ref-Apache-license_37-0" class="reference"><a href="#cite_note-Apache-license-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Apache-ars_38-0" class="reference"><a href="#cite_note-Apache-ars-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Apache-3_39-0" class="reference"><a href="#cite_note-Apache-3-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> the last three have the advantage of being <a href="/wiki/Open_source_software" class="mw-redirect" title="Open source software">open source software</a> and available for nearly any <a href="/wiki/Operating_system" title="Operating system">operating system</a>.) Designed for archival purposes,<sup id="cite_ref-Windows_Media_Audio_9_Lossless_40-0" class="reference"><a href="#cite_note-Windows_Media_Audio_9_Lossless-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> it compresses audio signals without loss of quality from the original using VBR. When decompressed, the audio signal is an exact replica of the original. The first version of the codec, WMA 9 Lossless, and its revisions support up to 96 kHz, 24-bit audio for up to 6 discrete channels (<a href="/wiki/5.1" class="mw-redirect" title="5.1">5.1 channel surround</a>) with dynamic range compression control. The typical compression ratio for music varies between 1.7:1 and 3:1.<sup id="cite_ref-Windows_Media_Audio_9_Lossless_40-1" class="reference"><a href="#cite_note-Windows_Media_Audio_9_Lossless-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-extremetech_41-0" class="reference"><a href="#cite_note-extremetech-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-42" class="reference"><a href="#cite_note-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> </p><p>Hardware support for the codec is available on the Cowon A3,<sup id="cite_ref-43" class="reference"><a href="#cite_note-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> Cowon S9, <a href="/wiki/Bang_%26_Olufsen" title="Bang & Olufsen">Bang & Olufsen</a> Serenata<sup id="cite_ref-44" class="reference"><a href="#cite_note-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup> Sony Walkman NWZ-A and NWZ-S series, <a href="/wiki/Zune_4,_8" class="mw-redirect" title="Zune 4, 8">Zune 4, 8</a>, <a href="/wiki/Zune_80" class="mw-redirect" title="Zune 80">80</a> <a href="/wiki/Zune_30" title="Zune 30">30</a>, Zune 120 (with firmware version 2.2 or later) and the <a href="/wiki/Zune_HD" title="Zune HD">Zune HD</a>, <a href="/wiki/Xbox_360" title="Xbox 360">Xbox 360</a>,<sup id="cite_ref-xboxfaq_29-1" class="reference"><a href="#cite_note-xboxfaq-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Windows_Mobile" title="Windows Mobile">Windows Mobile</a>-powered devices with Windows Media Player 10 Mobile,<sup id="cite_ref-winmobilefaq_30-1" class="reference"><a href="#cite_note-winmobilefaq-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> Windows Phone (version 8 and above), Toshiba Gigabeat S and V models, Toshiba T-400, the Meizu M3, and <a href="/wiki/Best_Buy" title="Best Buy">Best Buy's</a> Insignia NS-DV, Pilot, and Sport music players. The Logitech Squeezebox Touch now supports the format natively despite previously only supporting it via transcoding. Like WMA Standard, WMA Lossless is being used by a few online stores to distribute music online.<sup id="cite_ref-businessweek_45-0" class="reference"><a href="#cite_note-businessweek-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-microsoftwmpstores_46-0" class="reference"><a href="#cite_note-microsoftwmpstores-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> Similar to WMA Pro, the WMA Lossless decoder can perform downmixing when capable audio hardware is not present.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2010)">citation needed</span></a></i>]</sup> As of 2012, the <a href="/wiki/FFmpeg" title="FFmpeg">ffmpeg</a> and <a href="/wiki/Libav" title="Libav">libav</a> projects have open source WMA Lossless decoders based on reverse engineering of the official decoder. Only 16-bit WMA files can be successfully decoded by ffmpeg as of June 20, 2012. </p> <div class="mw-heading mw-heading3"><h3 id="Windows_Media_Audio_Voice">Windows Media Audio Voice</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=7" title="Edit section: Windows Media Audio Voice"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>Windows Media Audio Voice</b> (WMA Voice) is a lossy audio codec that competes with <a href="/wiki/Speex" title="Speex">Speex</a> (used in Microsoft's own <a href="/wiki/Xbox_Live" class="mw-redirect" title="Xbox Live">Xbox Live</a> online service<sup id="cite_ref-47" class="reference"><a href="#cite_note-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup>), <a href="/wiki/ACELP" class="mw-redirect" title="ACELP">ACELP</a>, and other codecs. Designed for low-bandwidth, voice playback applications,<sup id="cite_ref-Windows_Media_Audio_9_Voice_48-0" class="reference"><a href="#cite_note-Windows_Media_Audio_9_Voice-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> it employs low-pass and high-pass filtering of sound outside the human speech frequency range to achieve higher compression efficiency than WMA. It can automatically detect sections of an audio track containing both voice and music and use the standard WMA compression algorithm instead.<sup id="cite_ref-wmav9series_24-1" class="reference"><a href="#cite_note-wmav9series-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> WMA Voice supports up to 22.05 kHz for a single channel (mono) only.<sup id="cite_ref-Windows_Media_Audio_9_Voice_48-1" class="reference"><a href="#cite_note-Windows_Media_Audio_9_Voice-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> Encoding is limited to <a href="/wiki/Constant_bit_rate" class="mw-redirect" title="Constant bit rate">constant bit rate</a> (CBR) and up to 20 kbit/s. The first and only version of the codec is WMA 9 Voice. </p><p>Windows Mobile-powered devices with Windows Media Player 10 Mobile have native support for WMA 9 Voice playback.<sup id="cite_ref-winmobilefaq_30-2" class="reference"><a href="#cite_note-winmobilefaq-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> In addition, <a href="/wiki/BBC_World_Service" title="BBC World Service">BBC World Service</a> has employed WMA Voice for its <a href="/wiki/Internet_radio" title="Internet radio">Internet radio</a> streaming service.<sup id="cite_ref-roku_49-0" class="reference"><a href="#cite_note-roku-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Sound_quality">Sound quality</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=8" title="Edit section: Sound quality"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <dl><dd><i>See <a href="/wiki/Codec_listening_test#Results" title="Codec listening test">codec listening test</a> for a table of double-blind listening test results.</i></dd></dl> <p>Microsoft claims that audio encoded with WMA sounds better than MP3 at the same bit rate; Microsoft also claims that audio encoded with WMA at lower bit rates sound better than MP3 at higher bit rates.<sup id="cite_ref-wmmusic_50-0" class="reference"><a href="#cite_note-wmmusic-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Double_blind" class="mw-redirect" title="Double blind">Double blind</a> listening tests with other lossy audio codecs have shown varying results, from failure to support Microsoft's claims about its superior quality to supremacy over other codecs. One independent test conducted in May 2004 at 128 kbit/s showed that WMA was roughly equivalent to <a href="/wiki/LAME" title="LAME">LAME</a> MP3; inferior to AAC and Vorbis; and superior to <a href="/wiki/ATRAC3" class="mw-redirect" title="ATRAC3">ATRAC3</a> (software version).<sup id="cite_ref-rjamorim_51-0" class="reference"><a href="#cite_note-rjamorim-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> </p><p>Some studies concluded: </p> <ul><li>At <a rel="nofollow" class="external text" href="http://www.rjamorim.com/test/32 kbit/s/results.html">32 kbit/s</a>,<sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged August 2019">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup> WMA Standard was noticeably better than LAME MP3, but not better than other modern codecs in a collective, independent test in July 2004.</li> <li>At <a rel="nofollow" class="external text" href="http://www.hydrogenaud.io/forums/index.php?showtopic=50888">48 kbit/s</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140708014541/http://www.hydrogenaud.io/forums/index.php?showtopic=50888">Archived</a> 2014-07-08 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, WMA 10 Pro was ranked second after <a href="/wiki/Nero_AG" title="Nero AG">Nero</a> HE-AAC and better than WMA 9.2 in an independent listening test organized and supported by Sebastian Mares and Hydrogenaudio Forums in December 2006. This test, however, used CBR for WMA 10 Pro and VBR for the other codecs.</li> <li>At <a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/forpros/codecs/comparison.aspx">64 kbit/s</a>, WMA Pro outperformed Nero HE-AAC in a listening test commissioned by Microsoft but independently performed by the <a href="/wiki/National_Software_Testing_Labs" class="mw-redirect" title="National Software Testing Labs">National Software Testing Labs</a> in 1999. Out of 300 participants, "71% of all listeners indicated that WMA Pro was equal to or better than HE AAC."<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="No working link to the actual study (January 2016)">citation needed</span></a></i>]</sup> However, a September 2003 public listening test conducted by Roberto Amorim found that listeners preferred 128 kbit/s MP3 to 64 kbit/s WMA audio with greater than 99% <a href="/wiki/Confidence_interval" title="Confidence interval">confidence</a>.</li> <li>At <a rel="nofollow" class="external text" href="http://www.hydrogenaud.io/forums/index.php?showtopic=35438">80 kbit/s</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140708054803/http://www.hydrogenaud.io/forums/index.php?showtopic=35438">Archived</a> 2014-07-08 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> and <a rel="nofollow" class="external text" href="http://forum.hardware.fr/hardwarefr/VideoSon/MP3-WMA-AAC-OGG-qualite-kbit/s-evaluation-sujet-84950-1.htm">96 kbit/s</a>, WMA had lower quality than HE-AAC, <a href="/wiki/AAC-LC" class="mw-redirect" title="AAC-LC">AAC-LC</a>, and Vorbis; near-equivalent quality to MP3, and better quality than <a href="/wiki/Musepack" title="Musepack">MPC</a> in individual tests done in 2005.</li> <li>At <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100214134736/http://www.listening-tests.info/mf-128-1/results.htm">128 kbit/s</a>, there was a four-way tie between aoTuV Vorbis, LAME MP3, WMA 9 Pro and AAC in a large scale test in January 2006, with each codec sounding close to the uncompressed music file for most listeners.</li> <li>At <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070927173254/http://www.edn.com/article/CA307865.html">768 kbit/s</a>, WMA 9 Pro delivered full-spectrum response at half the bit rate required for <a href="/wiki/DTS_(sound_system)" class="mw-redirect" title="DTS (sound system)">DTS</a> in a comparative test done by <a href="/wiki/EDN_(magazine)" title="EDN (magazine)">EDN</a> in October 2003. The test sample was a 48 kHz, 5.1 channel surround audio track.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Criticism_of_claimed_quality">Criticism of claimed quality</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=9" title="Edit section: Criticism of claimed quality"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Microsoft's claims of WMA sound quality have frequently drawn complaints. "Some audiophiles challenge Microsoft's claims regarding WMA's quality", according to a published article from EDN.<sup id="cite_ref-EDN_Internet_Radio_11-1" class="reference"><a href="#cite_note-EDN_Internet_Radio-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Another article from MP3 Developments wrote that Microsoft's claim about CD-quality audio at 64 kbit/s with WMA was "very far from the truth".<sup id="cite_ref-52" class="reference"><a href="#cite_note-52"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup> At the early stages of WMA's development, a representative from RealNetworks claimed that WMA was a "clear and futile effort by Microsoft to catch up with RealAudio 8".<sup id="cite_ref-53" class="reference"><a href="#cite_note-53"><span class="cite-bracket">[</span>53<span class="cite-bracket">]</span></a></sup> </p><p>Microsoft has sometimes claimed that the sound quality of WMA at 64 kbit/s equals or exceeds that of MP3 at 128 kbit/s (both WMA and MP3 are considered near-<a href="/wiki/Transparency_(data_compression)" title="Transparency (data compression)">transparent</a> at 192 kbit/s by most listeners). In a 1999 study funded by Microsoft, <a href="/wiki/National_Software_Testing_Laboratories" title="National Software Testing Laboratories">National Software Testing Laboratories</a> (NSTL) found that listeners preferred WMA at 64 kbit/s to MP3 at 128 kbit/s (as encoded by <a href="/wiki/MusicMatch_Jukebox" class="mw-redirect" title="MusicMatch Jukebox">MusicMatch Jukebox</a>).<sup id="cite_ref-54" class="reference"><a href="#cite_note-54"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup> </p><p>Both MP3 and WMA encoders have undergone active development and improvement for many years, so their relative quality may change over time. </p> <div class="mw-heading mw-heading2"><h2 id="Players">Players</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=10" title="Edit section: Players"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Apart from Windows Media Player, most of the WMA compression formats can be played using <a href="/wiki/ALLPlayer" title="ALLPlayer">ALLPlayer</a>, <a href="/wiki/VLC_media_player" title="VLC media player">VLC media player</a>,<sup id="cite_ref-vlc_55-0" class="reference"><a href="#cite_note-vlc-55"><span class="cite-bracket">[</span>55<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Media_Player_Classic" title="Media Player Classic">Media Player Classic</a>,<sup id="cite_ref-mpc-hc_56-0" class="reference"><a href="#cite_note-mpc-hc-56"><span class="cite-bracket">[</span>56<span class="cite-bracket">]</span></a></sup> <a href="/wiki/MPlayer" title="MPlayer">MPlayer</a>, <a href="/wiki/RealPlayer" title="RealPlayer">RealPlayer</a>, <a href="/wiki/Winamp" title="Winamp">Winamp</a>, <a href="/wiki/Zune_Software" class="mw-redirect" title="Zune Software">Zune Software</a> (with certain limitations—DSP plugin support and DirectSound output is disabled using the default WMA plugin),<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2012)">citation needed</span></a></i>]</sup> and many other software media players. The Microsoft Zune media management software supports most WMA codecs, but uses a variation of <a href="/wiki/Windows_Media_DRM" title="Windows Media DRM">Windows Media DRM</a> which is used by PlaysForSure. </p><p>The <a href="/wiki/FFmpeg" title="FFmpeg">FFmpeg</a> project has reverse-engineered and re-implemented the WMA codecs to allow their use on <a href="/wiki/POSIX" title="POSIX">POSIX</a>-compliant operating systems such as <a href="/wiki/Linux" title="Linux">Linux</a>. The <a href="/wiki/Rockbox" title="Rockbox">Rockbox</a> project further extended this codec to be suitable for embedded cores, allowing playback on portable MP3 players and cell phones running open source software. RealNetworks has announced plans to support playback of DRM-free WMA files in RealPlayer for Linux.<sup id="cite_ref-newsdotcom_57-0" class="reference"><a href="#cite_note-newsdotcom-57"><span class="cite-bracket">[</span>57<span class="cite-bracket">]</span></a></sup> On the <a href="/wiki/Mac_(computer)" title="Mac (computer)">Macintosh</a> platform, Microsoft released a <a href="/wiki/PowerPC" title="PowerPC">PowerPC</a> version of Windows Media Player for <a href="/wiki/Mac_OS_X" class="mw-redirect" title="Mac OS X">Mac OS X</a> in 2003,<sup id="cite_ref-wmp9mac_58-0" class="reference"><a href="#cite_note-wmp9mac-58"><span class="cite-bracket">[</span>58<span class="cite-bracket">]</span></a></sup> but further development of the software has ceased. Microsoft currently endorses the third-party <a href="/wiki/Flip4Mac" title="Flip4Mac">Flip4Mac</a> WMA, a <a href="/wiki/QuickTime" title="QuickTime">QuickTime</a> component that allows Macintosh users to play WMA files in any player that uses the QuickTime framework.<sup id="cite_ref-flip4mac_59-0" class="reference"><a href="#cite_note-flip4mac-59"><span class="cite-bracket">[</span>59<span class="cite-bracket">]</span></a></sup> Flip4Mac, however, does not currently support the Windows Media Audio Voice codec.<sup id="cite_ref-flip4macwmavoice_60-0" class="reference"><a href="#cite_note-flip4macwmavoice-60"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> </p><p>The core <a href="/wiki/Android_(operating_system)" title="Android (operating system)">Android platform</a> does not itself support WMA, but there is third-party WMA software for Android devices.<sup id="cite_ref-61" class="reference"><a href="#cite_note-61"><span class="cite-bracket">[</span>61<span class="cite-bracket">]</span></a></sup> </p><p>WMA format can be played on almost all Windows Mobile and later Windows Phone devices. </p> <div class="mw-heading mw-heading2"><h2 id="Encoders">Encoders</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=11" title="Edit section: Encoders"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are many proprietary and <a href="/wiki/Open-source_software" title="Open-source software">open source</a> software packages that can export audio in WMA format, including amongst many others Windows Media Player, <a href="/wiki/Windows_Movie_Maker" title="Windows Movie Maker">Windows Movie Maker</a>, <a href="/wiki/Microsoft_Expression_Encoder" title="Microsoft Expression Encoder">Microsoft Expression Encoder</a>, <a href="/wiki/Sony_Sound_Forge" class="mw-redirect" title="Sony Sound Forge">Sony Sound Forge</a>, <a href="/wiki/GOM_Player" title="GOM Player">GOM Player</a>, <a href="/wiki/RealPlayer" title="RealPlayer">RealPlayer</a>,<sup id="cite_ref-realplayerwma_62-0" class="reference"><a href="#cite_note-realplayerwma-62"><span class="cite-bracket">[</span>62<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Adobe_Premiere_Pro" title="Adobe Premiere Pro">Adobe Premiere Pro</a>,<sup id="cite_ref-premiere_63-0" class="reference"><a href="#cite_note-premiere-63"><span class="cite-bracket">[</span>63<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Adobe_Audition" title="Adobe Audition">Adobe Audition</a>,<sup id="cite_ref-audition_64-0" class="reference"><a href="#cite_note-audition-64"><span class="cite-bracket">[</span>64<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Adobe_Soundbooth" title="Adobe Soundbooth">Adobe Soundbooth</a>, and <a href="/wiki/VLC_media_player" title="VLC media player">VLC media player</a>.<sup id="cite_ref-soundbooth_65-0" class="reference"><a href="#cite_note-soundbooth-65"><span class="cite-bracket">[</span>65<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Microsoft_Office_OneNote" class="mw-redirect" title="Microsoft Office OneNote">Microsoft Office OneNote</a> supports encoding in all WMA codecs,<sup id="cite_ref-onenote_66-0" class="reference"><a href="#cite_note-onenote-66"><span class="cite-bracket">[</span>66<span class="cite-bracket">]</span></a></sup> and <a href="/wiki/Windows_Media_Encoder" title="Windows Media Encoder">Windows Media Encoder</a> supports all available bit rate and resolution options as well. </p> <div class="mw-heading mw-heading2"><h2 id="Digital_rights_management">Digital rights management</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=12" title="Edit section: Digital rights management"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Windows_Media_DRM" title="Windows Media DRM">Windows Media DRM</a></div> <p>The WMA codecs are most often used with the ASF container format, which has an optional DRM facility. Windows Media DRM, which can be used in conjunction with WMA, supports time-limited music subscription services such as those offered by unlimited download services, including MTV's <a href="/wiki/URGE" class="mw-redirect" title="URGE">URGE</a>, <a href="/wiki/Napster" title="Napster">Napster</a>, <a href="/wiki/Rhapsody_(online_music_service)" class="mw-redirect" title="Rhapsody (online music service)">Rhapsody</a>, <a href="/wiki/Yahoo!_Music_Unlimited" class="mw-redirect" title="Yahoo! Music Unlimited">Yahoo! Music Unlimited</a>, and <a href="/wiki/Virgin_Digital" title="Virgin Digital">Virgin Digital</a>. Windows Media DRM, a component of PlaysForSure and <a href="/wiki/Windows_Media_Connect" title="Windows Media Connect">Windows Media Connect</a>, is supported on many modern portable audio devices and streaming media clients such as <a href="/wiki/Roku" title="Roku">Roku</a>, <a href="/wiki/SoundBridge" title="SoundBridge">SoundBridge</a>, <a href="/wiki/Xbox_360" title="Xbox 360">Xbox 360</a>, and <a href="/wiki/Wii" title="Wii">Wii</a>. Players that support the WMA format but not Windows Media DRM cannot play DRM-protected files. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=13" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Windows_Media_Video" title="Windows Media Video">Windows Media Video</a> – a video file format and codec developed by Microsoft</li> <li><a href="/wiki/WAV" title="WAV">WAV</a></li> <li><a href="/wiki/JPEG_XR" title="JPEG XR">JPEG XR / HD Photo</a> – an image file format and codec developed by Microsoft</li> <li><a href="/wiki/Surround_sound" title="Surround sound">Surround sound</a></li> <li><a href="/wiki/Timeline_of_audio_formats" title="Timeline of audio formats">Timeline of audio formats</a></li> <li><a href="/wiki/Comparison_of_audio_coding_formats" title="Comparison of audio coding formats">Comparison of audio coding formats</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=14" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-wmt4-release-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-wmt4-release_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-wmt4-release_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024030506/http://www.microsoft.com/presspass/press/1999/Aug99/WM4Lnchpr.mspx">"Windows Media Technologies 4 Delivers Cutting-Edge CD-Quality Audio On the Internet"</a>. Microsoft PressPass. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/1999/Aug99/WM4Lnchpr.mspx">the original</a> on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Technologies+4+Delivers+Cutting-Edge+CD-Quality+Audio+On+the+Internet&rft.pub=Microsoft+PressPass&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F1999%2FAug99%2FWM4Lnchpr.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmith,_Tony1999" class="citation web cs1">Smith, Tony (1999-03-12). <a rel="nofollow" class="external text" href="https://www.theregister.co.uk/1999/03/12/microsoft_readies_mp3killer_digital_music/">"Microsoft readies MP3-killer digital music format"</a>. <i><a href="/wiki/The_Register" title="The Register">The Register</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080321023436/http://www.theregister.co.uk/1999/03/12/microsoft_readies_mp3killer_digital_music/">Archived</a> from the original on 2008-03-21<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Register&rft.atitle=Microsoft+readies+MP3-killer+digital+music+format&rft.date=1999-03-12&rft.au=Smith%2C+Tony&rft_id=https%3A%2F%2Fwww.theregister.co.uk%2F1999%2F03%2F12%2Fmicrosoft_readies_mp3killer_digital_music%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-RealNetworks_MSAudio_Analysis-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-RealNetworks_MSAudio_Analysis_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-RealNetworks_MSAudio_Analysis_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.real.com/msaudio/">"Analysis of the Microsoft Audio Codec"</a>. RealNetworks. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070818112312/http://www.real.com/msaudio/">Archived</a> from the original on 2007-08-18<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Analysis+of+the+Microsoft+Audio+Codec&rft.pub=RealNetworks&rft_id=http%3A%2F%2Fwww.real.com%2Fmsaudio%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Windows_Media_9_Series_Whitepaper-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-Windows_Media_9_Series_Whitepaper_4-6"><sup><i><b>g</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070928022928/http://www.cse.dmu.ac.uk/~hoi/mult2003/week6/WinMedia9WhitePaper.doc">"Windows Media 9 Series Capabilities and Benefits Overview"</a>. International Narcotics Control Board. Archived from <a rel="nofollow" class="external text" href="http://www.cse.dmu.ac.uk/~hoi/mult2003/week6/WinMedia9WhitePaper.doc">the original</a> <span class="cs1-format">(DOC)</span> on 2007-09-28<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+9+Series+Capabilities+and+Benefits+Overview&rft.pub=International+Narcotics+Control+Board&rft_id=http%3A%2F%2Fwww.cse.dmu.ac.uk%2F~hoi%2Fmult2003%2Fweek6%2FWinMedia9WhitePaper.doc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Henrique_Malvar_brazilmax.com-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-Henrique_Malvar_brazilmax.com_5-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHinchberger,_Bill2001" class="citation web cs1">Hinchberger, Bill (2001-09-09). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071013004451/http://www.brazilmax.com/news.cfm/tborigem/fe_business/id/3">"Riding the Malvar Wave"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.brazilmax.com/news.cfm/tborigem/fe_business/id/3">the original</a> on 2007-10-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Riding+the+Malvar+Wave&rft.date=2001-09-09&rft.au=Hinchberger%2C+Bill&rft_id=http%3A%2F%2Fwww.brazilmax.com%2Fnews.cfm%2Ftborigem%2Ffe_business%2Fid%2F3&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Microsoft_Research_Henrique_Malvar-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-Microsoft_Research_Henrique_Malvar_6-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070825181638/http://research.microsoft.com/aboutmsr/presskit/malvar/">"Press Kit: Henrique Malvar"</a>. Microsoft Research. Archived from <a rel="nofollow" class="external text" href="http://research.microsoft.com/aboutmsr/presskit/malvar/">the original</a> on 2007-08-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Press+Kit%3A+Henrique+Malvar&rft.pub=Microsoft+Research&rft_id=http%3A%2F%2Fresearch.microsoft.com%2Faboutmsr%2Fpresskit%2Fmalvar%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070717203523/http://research.microsoft.com/ccsp/">"Communication, Collaboration, and Signal Processing"</a>. Microsoft Research. Archived from <a rel="nofollow" class="external text" href="http://research.microsoft.com/ccsp/">the original</a> on 2007-07-17<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Communication%2C+Collaboration%2C+and+Signal+Processing&rft.pub=Microsoft+Research&rft_id=http%3A%2F%2Fresearch.microsoft.com%2Fccsp%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024025133/http://www.microsoft.com/presspass/press/1999/apr99/wmtdwnldpr.mspx">"Microsoft Windows Media Technologies Gains Support for Downloadable Music from Top Music Sites, Independent Labels, Popular Bands And Innovative Developers"</a>. Microsoft PressPass. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/1999/apr99/wmtdwnldpr.mspx">the original</a> on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Microsoft+Windows+Media+Technologies+Gains+Support+for+Downloadable+Music+from+Top+Music+Sites%2C+Independent+Labels%2C+Popular+Bands+And+Innovative+Developers&rft.pub=Microsoft+PressPass&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F1999%2Fapr99%2Fwmtdwnldpr.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBarry,_Richard1999" class="citation web cs1">Barry, Richard (1999-04-14). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070930205652/http://news.zdnet.co.uk/emergingtech/0,1000000183,2071559,00.htm">"MS Audio 4.0 will eat MP3..."</a> Archived from <a rel="nofollow" class="external text" href="http://news.zdnet.co.uk/emergingtech/0,1000000183,2071559,00.htm">the original</a> on 2007-09-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MS+Audio+4.0+will+eat+MP3...&rft.date=1999-04-14&rft.au=Barry%2C+Richard&rft_id=http%3A%2F%2Fnews.zdnet.co.uk%2Femergingtech%2F0%2C1000000183%2C2071559%2C00.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Microsoft_TechNet_MS_Windows_Media_Technologies_Features-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-Microsoft_TechNet_MS_Windows_Media_Technologies_Features_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Microsoft_TechNet_MS_Windows_Media_Technologies_Features_10-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024193445/http://www.microsoft.com/technet/archive/netshow/evaluate/features.mspx?mfr=true">"MS Windows Media Technologies Features"</a>. Microsoft TechNet. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/technet/archive/netshow/evaluate/features.mspx?mfr=true">the original</a> on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MS+Windows+Media+Technologies+Features&rft.pub=Microsoft+TechNet&rft_id=http%3A%2F%2Fwww.microsoft.com%2Ftechnet%2Farchive%2Fnetshow%2Fevaluate%2Ffeatures.mspx%3Fmfr%3Dtrue&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-EDN_Internet_Radio-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-EDN_Internet_Radio_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-EDN_Internet_Radio_11-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071010050058/http://www.edn.com/index.asp?layout=article&articleid=CA46537">"The Internet-audio (r)evolution"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.edn.com/index.asp?layout=article&articleid=CA46537">the original</a> on 2007-10-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>. <q>some audiophiles challenge Microsoft's claims regarding WMA's quality</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Internet-audio+%28r%29evolution&rft_id=http%3A%2F%2Fwww.edn.com%2Findex.asp%3Flayout%3Darticle%26articleid%3DCA46537&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Broadcom-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-Broadcom_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Broadcom_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Broadcom_12-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Broadcom_12-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070608015446/http://www.broadcom.com/products/software/mobmm_audiocodecs.php">"Broadcom Corporation: Audio Codecs"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.broadcom.com/products/software/mobmm_audiocodecs.php">the original</a> on 2007-06-08<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Broadcom+Corporation%3A+Audio+Codecs&rft_id=http%3A%2F%2Fwww.broadcom.com%2Fproducts%2Fsoftware%2Fmobmm_audiocodecs.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024031413/http://www.microsoft.com/presspass/press/2000/Apr00/NABWMT7pr.mspx">"Microsoft Announces Windows Media Technologies 7"</a>. Microsoft. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/2000/Apr00/NABWMT7pr.mspx">the original</a> on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Microsoft+Announces+Windows+Media+Technologies+7&rft.pub=Microsoft&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F2000%2FApr00%2FNABWMT7pr.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cdrinfo.com/Sections/News/Details.aspx?NewsId=1232">"Microsoft Releases Windows Media Audio and Video 8"</a>. CDRInf. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070926232302/http://www.cdrinfo.com/Sections/News/Details.aspx?NewsId=1232">Archived</a> from the original on 2007-09-26<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Microsoft+Releases+Windows+Media+Audio+and+Video+8&rft.pub=CDRInf&rft_id=http%3A%2F%2Fwww.cdrinfo.com%2FSections%2FNews%2FDetails.aspx%3FNewsId%3D1232&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070912233437/http://www.microsoft.com/presspass/press/1999/may99/wmtsupppr.mspx">"Microsoft Wins Major ISV Support for Windows Media Technologies 4.0"</a>. Microsoft PressPass. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/1999/may99/wmtsupppr.mspx">the original</a> on 2007-09-12<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Microsoft+Wins+Major+ISV+Support+for+Windows+Media+Technologies+4.0&rft.pub=Microsoft+PressPass&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F1999%2Fmay99%2Fwmtsupppr.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://docs.microsoft.com/en-us/windows/win32/directshow/windows-media-source-filter">"Windows Media Source Filter - Win32 apps"</a>. <i>docs.microsoft.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2021-11-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=docs.microsoft.com&rft.atitle=Windows+Media+Source+Filter+-+Win32+apps&rft_id=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows%2Fwin32%2Fdirectshow%2Fwindows-media-source-filter&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFThurrott,_Paul2005" class="citation web cs1">Thurrott, Paul (2005-04-30). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070818152206/http://www.winsupersite.com/reviews/wmp7.asp">"SuperSite for Windows Media Player 7 Review"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.winsupersite.com/reviews/wmp7.asp">the original</a> on 2007-08-18<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=SuperSite+for+Windows+Media+Player+7+Review&rft.date=2005-04-30&rft.au=Thurrott%2C+Paul&rft_id=http%3A%2F%2Fwww.winsupersite.com%2Freviews%2Fwmp7.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/284094">"The Difference Between ASF and WMV/WMA Files"</a>. Microsoft. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070819113435/http://support.microsoft.com/kb/284094">Archived</a> from the original on 2007-08-19<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Difference+Between+ASF+and+WMV%2FWMA+Files&rft.pub=Microsoft&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F284094&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Low-Delay_Audio-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-Low-Delay_Audio_19-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/aa390496.aspx">"Windows Media Format 11 SDK Low-Delay Audio"</a>. Microsoft MSDN. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024183517/http://msdn2.microsoft.com/en-us/library/aa390496.aspx">Archived</a> from the original on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Format+11+SDK+Low-Delay+Audio&rft.pub=Microsoft+MSDN&rft_id=http%3A%2F%2Fmsdn2.microsoft.com%2Fen-us%2Flibrary%2Faa390496.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-nokia-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-nokia_20-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070831104239/http://www.microsoft.com/presspass/press/2005/feb05/02-14NokiaCollaborationPR.mspx">"Microsoft and Nokia Collaborate to Help Ensure Consumers Can Enjoy Digital Music Anywhere"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/2005/feb05/02-14NokiaCollaborationPR.mspx">the original</a> on 2007-08-31<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Microsoft+and+Nokia+Collaborate+to+Help+Ensure+Consumers+Can+Enjoy+Digital+Music+Anywhere&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F2005%2Ffeb05%2F02-14NokiaCollaborationPR.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-PSP_Review-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-PSP_Review_21-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarnoy,_David2005" class="citation web cs1">Carnoy, David (2005-03-23). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070810200119/http://reviews.cnet.co.uk/gamesconsoles/0,139102149,39188324,00.htm">"Sony PSP review"</a>. Archived from <a rel="nofollow" class="external text" href="http://reviews.cnet.co.uk/gamesconsoles/0,139102149,39188324,00.htm">the original</a> on 2007-08-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sony+PSP+review&rft.date=2005-03-23&rft.au=Carnoy%2C+David&rft_id=http%3A%2F%2Freviews.cnet.co.uk%2Fgamesconsoles%2F0%2C139102149%2C39188324%2C00.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Windows_Media_Audio_9_Professional-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-Windows_Media_Audio_9_Professional_22-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Professional">"Windows Media Audio Codecs: Windows Media Audio 9 Professional"</a>. Microsoft. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070901193343/http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Professional">Archived</a> from the original on 2007-09-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Audio+Codecs%3A+Windows+Media+Audio+9+Professional&rft.pub=Microsoft&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fforpros%2Fcodecs%2Faudio.aspx%23WindowsMediaAudio9Professional&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-winsupersite-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-winsupersite_23-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070528090443/http://www.winsupersite.com/reviews/wm9series.asp">"Paul Thurrott's SuperSite for Windows: Windows Media 9 Series reviewed"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.winsupersite.com/reviews/wm9series.asp">the original</a> on 2007-05-28<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-06-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Paul+Thurrott%27s+SuperSite+for+Windows%3A+Windows+Media+9+Series+reviewed&rft_id=http%3A%2F%2Fwww.winsupersite.com%2Freviews%2Fwm9series.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-wmav9series-24"><span class="mw-cite-backlink">^ <a href="#cite_ref-wmav9series_24-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-wmav9series_24-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070928022926/http://download.microsoft.com/download/6/f/c/6fc03c60-5d5b-42c0-bcce-5e184fa56741/2_Audio_Video.ppt">"Windows Media Audio & Video 9 Series"</a>. Archived from <a rel="nofollow" class="external text" href="http://download.microsoft.com/download/6/f/c/6fc03c60-5d5b-42c0-bcce-5e184fa56741/2_Audio_Video.ppt">the original</a> on 2007-09-28<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Audio+%26+Video+9+Series&rft_id=http%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F6%2Ff%2Fc%2F6fc03c60-5d5b-42c0-bcce-5e184fa56741%2F2_Audio_Video.ppt&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-wmalowdelay-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-wmalowdelay_25-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://msdn2.microsoft.com/en-us/library/aa390496.aspx">"Low-Delay Audio"</a>. <i>msdn2.microsoft.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080417175047/http://msdn2.microsoft.com/en-us/library/aa390496.aspx">Archived</a> from the original on 17 April 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">30 April</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=msdn2.microsoft.com&rft.atitle=Low-Delay+Audio&rft_id=http%3A%2F%2Fmsdn2.microsoft.com%2Fen-us%2Flibrary%2Faa390496.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-streamingmedia.com_Windows_Media_Best_Practices-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-streamingmedia.com_Windows_Media_Best_Practices_26-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmith,_Tony2007" class="citation web cs1">Smith, Tony (2007-02-21). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070831100606/http://www.streamingmedia.com/article.asp?id=9510&page=2&c=4">"Best Practices for Windows Media Encoding"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.streamingmedia.com/article.asp?id=9510&page=2&c=4">the original</a> on 2007-08-31<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Best+Practices+for+Windows+Media+Encoding&rft.date=2007-02-21&rft.au=Smith%2C+Tony&rft_id=http%3A%2F%2Fwww.streamingmedia.com%2Farticle.asp%3Fid%3D9510%26page%3D2%26c%3D4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-edn-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-edn_27-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070430153905/http://www.edn.com/index.asp?layout=article&articleid=CA6391444&industryid=22043">"Voices: Microsoft's Amir Majidimehr: a window to the world of digital media - 11-23-2006 - EDN"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.edn.com/index.asp?layout=article&articleid=CA6391444&industryid=22043">the original</a> on 2007-04-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-06-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Voices%3A+Microsoft%27s+Amir+Majidimehr%3A+a+window+to+the+world+of+digital+media+-+11-23-2006+-+EDN&rft_id=http%3A%2F%2Fwww.edn.com%2Findex.asp%3Flayout%3Darticle%26articleid%3DCA6391444%26industryid%3D22043&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-zunefaq-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-zunefaq_28-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.zune.net/en-us/support/howto/start/providecontent.htm">"Zune.net: How-To - Provide Content for Zune"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070819115547/http://www.zune.net/en-us/support/howto/start/providecontent.htm">Archived</a> from the original on 2007-08-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Zune.net%3A+How-To+-+Provide+Content+for+Zune&rft_id=http%3A%2F%2Fwww.zune.net%2Fen-us%2Fsupport%2Fhowto%2Fstart%2Fprovidecontent.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-xboxfaq-29"><span class="mw-cite-backlink">^ <a href="#cite_ref-xboxfaq_29-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-xboxfaq_29-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080213124920/http://blogs.msdn.com/xboxteam/default.aspx">"Spring '07 Video Playback FAQ"</a>. Archived from <a rel="nofollow" class="external text" href="http://blogs.msdn.com/xboxteam/default.aspx">the original</a> on 2008-02-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Spring+%2707+Video+Playback+FAQ&rft_id=http%3A%2F%2Fblogs.msdn.com%2Fxboxteam%2Fdefault.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-winmobilefaq-30"><span class="mw-cite-backlink">^ <a href="#cite_ref-winmobilefaq_30-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-winmobilefaq_30-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-winmobilefaq_30-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/player/windowsmobile/faq.aspx">"Windows Media Player Mobile FAQ"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070914112132/http://www.microsoft.com/windows/windowsmedia/player/windowsmobile/faq.aspx">Archived</a> from the original on 2007-09-14.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Windows+Media+Player+Mobile+FAQ&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fplayer%2Fwindowsmobile%2Ffaq.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-msmotorolawmapro-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-msmotorolawmapro_31-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024172933/http://www.microsoft.com/presspass/press/2006/feb06/02-13MotorolaMSCollabPR.mspx">"Motorola and Microsoft Plan to Bring More Choice to Mobile Music Fans"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/2006/feb06/02-13MotorolaMSCollabPR.mspx">the original</a> on 2007-10-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-12-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Motorola+and+Microsoft+Plan+to+Bring+More+Choice+to+Mobile+Music+Fans&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F2006%2Ffeb06%2F02-13MotorolaMSCollabPR.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-digitallifestyles-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-digitallifestyles_32-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070927230600/http://digital-lifestyles.info/2006/02/13/motorola-dis-apple-expect-more-microsoft-music-phones-3gsm/">"Motorola Dis Apple, Expect More Microsoft Music Phones: 3GSM"</a>. Archived from <a rel="nofollow" class="external text" href="http://digital-lifestyles.info/2006/02/13/motorola-dis-apple-expect-more-microsoft-music-phones-3gsm/">the original</a> on 2007-09-27<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Motorola+Dis+Apple%2C+Expect+More+Microsoft+Music+Phones%3A+3GSM&rft_id=http%3A%2F%2Fdigital-lifestyles.info%2F2006%2F02%2F13%2Fmotorola-dis-apple-expect-more-microsoft-music-phones-3gsm%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-rockbox-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-rockbox_33-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.rockbox.org/wiki/NewWMAAudioCodecs">"New WMA Audio Codecs"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110106054756/http://www.rockbox.org/wiki/NewWMAAudioCodecs">Archived</a> from the original on 2011-01-06.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=New+WMA+Audio+Codecs&rft_id=http%3A%2F%2Fwww.rockbox.org%2Fwiki%2FNewWMAAudioCodecs&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-wmvhd-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-wmvhd_34-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.bing.com/?form=HPFBBK&ssd=20230121_0800&mkt=en-ID">"Info"</a>. <i>Bing</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Bing&rft.atitle=Info&rft_id=https%3A%2F%2Fwww.bing.com%2F%3Fform%3DHPFBBK%26ssd%3D20230121_0800%26mkt%3Den-ID&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-verizonwmapro-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-verizonwmapro_35-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070615201708/http://www.microsoft.com/presspass/press/2006/jan06/01-05WMVCASTPR.mspx">"Verizon Wireless Chooses Microsoft Windows Media to Power Its New V CAST Music Service"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. Archived from <a rel="nofollow" class="external text" href="http://www.microsoft.com/presspass/press/2006/jan06/01-05WMVCASTPR.mspx">the original</a> on 2007-06-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-12-06</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Verizon+Wireless+Chooses+Microsoft+Windows+Media+to+Power+Its+New+V+CAST+Music+Service&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F2006%2Fjan06%2F01-05WMVCASTPR.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-winvistawmp11-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-winvistawmp11_36-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/products/windowsvista/features/details/mediaplayer11.mspx">"Windows Vista Features Explained Windows Media Player 11"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070913180242/http://www.microsoft.com/windows/products/windowsvista/features/details/mediaplayer11.mspx">Archived</a> from the original on 2007-09-13.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Windows+Vista+Features+Explained+Windows+Media+Player+11&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fproducts%2Fwindowsvista%2Ffeatures%2Fdetails%2Fmediaplayer11.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Apache-license-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-Apache-license_37-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://alac.macosforge.org">"Welcome to the Apple Lossless Audio Codec Project"</a>. <i>Apple Lossless Audio Codec</i>. MacOS Forge. October 27, 2011. <a rel="nofollow" class="external text" href="http://archive.wikiwix.com/cache/20160615225151/http://alac.macosforge.org/">Archived</a> from the original on June 15, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">October 29,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Apple+Lossless+Audio+Codec&rft.atitle=Welcome+to+the+Apple+Lossless+Audio+Codec+Project&rft.date=2011-10-27&rft_id=http%3A%2F%2Falac.macosforge.org&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Apache-ars-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-Apache-ars_38-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFForesman2011" class="citation web cs1">Foresman, Chris (October 28, 2011). <a rel="nofollow" class="external text" href="https://arstechnica.com/apple/news/2011/10/after-seven-years-apple-open-sources-its-apple-lossless-audio-codec.ars">"After seven years, Apple open sources its Apple Lossless Audio Codec"</a>. <i>Ars Technica</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111029123807/http://arstechnica.com/apple/news/2011/10/after-seven-years-apple-open-sources-its-apple-lossless-audio-codec.ars">Archived</a> from the original on October 29, 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">October 29,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Ars+Technica&rft.atitle=After+seven+years%2C+Apple+open+sources+its+Apple+Lossless+Audio+Codec&rft.date=2011-10-28&rft.aulast=Foresman&rft.aufirst=Chris&rft_id=https%3A%2F%2Farstechnica.com%2Fapple%2Fnews%2F2011%2F10%2Fafter-seven-years-apple-open-sources-its-apple-lossless-audio-codec.ars&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Apache-3-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-Apache-3_39-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFvon_Eitzen2011" class="citation web cs1">von Eitzen, Chris (October 28, 2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120515214941/http://www.h-online.com/open/news/item/Apple-open-sources-its-ALAC-lossless-audio-codec-1368212.html">"Apple open sources its ALAC lossless audio codec"</a>. <a href="/wiki/The_H" class="mw-redirect" title="The H">The H</a>. Archived from <a rel="nofollow" class="external text" href="http://h-online.com/-1368212">the original</a> on 15 May 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">October 29,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Apple+open+sources+its+ALAC+lossless+audio+codec&rft.pub=The+H&rft.date=2011-10-28&rft.aulast=von+Eitzen&rft.aufirst=Chris&rft_id=http%3A%2F%2Fh-online.com%2F-1368212&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Windows_Media_Audio_9_Lossless-40"><span class="mw-cite-backlink">^ <a href="#cite_ref-Windows_Media_Audio_9_Lossless_40-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Windows_Media_Audio_9_Lossless_40-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Lossless">"Windows Media Audio Codecs: Windows Media Audio 9 Lossless"</a>. Microsoft. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070901193343/http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Lossless">Archived</a> from the original on 2007-09-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Audio+Codecs%3A+Windows+Media+Audio+9+Lossless&rft.pub=Microsoft&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fforpros%2Fcodecs%2Faudio.aspx%23WindowsMediaAudio9Lossless&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-extremetech-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-extremetech_41-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.extremetech.com/article2/0,1558,1560783,00.asp">"ExtremeTech Audio Codec Quality Shootout"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110607190304/http://www.extremetech.com/article2/0,1558,1560783,00.asp">Archived</a> from the original on 2011-06-07.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ExtremeTech+Audio+Codec+Quality+Shootout&rft_id=http%3A%2F%2Fwww.extremetech.com%2Farticle2%2F0%2C1558%2C1560783%2C00.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-42"><span class="mw-cite-backlink"><b><a href="#cite_ref-42">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101125045330/http://members.home.nl/w.speek/comparison.htm">"Comparison of lossless audio compressors"</a>. Archived from <a rel="nofollow" class="external text" href="http://members.home.nl/w.speek/comparison.htm">the original</a> on 2010-11-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-11-25</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Comparison+of+lossless+audio+compressors&rft_id=http%3A%2F%2Fmembers.home.nl%2Fw.speek%2Fcomparison.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-43"><span class="mw-cite-backlink"><b><a href="#cite_ref-43">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTushar2019" class="citation web cs1">Tushar (July 2019). <a rel="nofollow" class="external text" href="https://techcaption.com/what-is-windows-audio-endpoint-builder-service/">"What is Windows Audio Endpoint Builder service And How To Start/Stop It"</a>. <i>techcaption.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=techcaption.com&rft.atitle=What+is+Windows+Audio+Endpoint+Builder+service+And+How+To+Start%2FStop+It&rft.date=2019-07&rft.au=Tushar&rft_id=https%3A%2F%2Ftechcaption.com%2Fwhat-is-windows-audio-endpoint-builder-service%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-44"><span class="mw-cite-backlink"><b><a href="#cite_ref-44">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070930231119/http://www.serenatamobile.com/">Article title</a><sup><a href="/wiki/Template:Usurped/doc" title="Template:Usurped/doc">[usurped]</a></sup></span> </li> <li id="cite_note-businessweek-45"><span class="mw-cite-backlink"><b><a href="#cite_ref-businessweek_45-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070715011626/http://www.businessweek.com/technology/content/jun2005/tc2005062_3663_tc024.htm">"Is This Digital Music's Future"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.businessweek.com/technology/content/jun2005/tc2005062_3663_tc024.htm">the original</a> on 2007-07-15.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Is+This+Digital+Music%27s+Future&rft_id=http%3A%2F%2Fwww.businessweek.com%2Ftechnology%2Fcontent%2Fjun2005%2Ftc2005062_3663_tc024.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-microsoftwmpstores-46"><span class="mw-cite-backlink"><b><a href="#cite_ref-microsoftwmpstores_46-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/player/stores.aspx">"Online Stores in Windows Media Player"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070727062708/http://www.microsoft.com/windows/windowsmedia/player/stores.aspx">Archived</a> from the original on 2007-07-27.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Online+Stores+in+Windows+Media+Player&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fplayer%2Fstores.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-47"><span class="mw-cite-backlink"><b><a href="#cite_ref-47">^</a></b></span> <span class="reference-text">Ralph Giles of <a href="/wiki/Xiph.org" class="mw-redirect" title="Xiph.org">Xiph.org</a> explained that Xbox Live uses Speex for voice compression in the June 6, 2005 interview on <a href="/wiki/LugRadio" title="LugRadio">LugRadio</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.lugradio.org/episodes/29">"Linux radio show - LugRadio"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071014210527/http://lugradio.org/episodes/29">Archived</a> from the original on 2007-10-14<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-10-10</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Linux+radio+show+-+LugRadio&rft_id=http%3A%2F%2Fwww.lugradio.org%2Fepisodes%2F29&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-Windows_Media_Audio_9_Voice-48"><span class="mw-cite-backlink">^ <a href="#cite_ref-Windows_Media_Audio_9_Voice_48-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Windows_Media_Audio_9_Voice_48-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Voice">"Windows Media Audio Codecs: Windows Media Audio 9 Voice"</a>. Microsoft. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070901193343/http://www.microsoft.com/windows/windowsmedia/forpros/codecs/audio.aspx#WindowsMediaAudio9Voice">Archived</a> from the original on 2007-09-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Media+Audio+Codecs%3A+Windows+Media+Audio+9+Voice&rft.pub=Microsoft&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fforpros%2Fcodecs%2Faudio.aspx%23WindowsMediaAudio9Voice&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-roku-49"><span class="mw-cite-backlink"><b><a href="#cite_ref-roku_49-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070816182910/http://www.rokulabs.com/products_soundbridge_internet.php">"Roku - SoundBridge Internet Radio"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.rokulabs.com/products_soundbridge_internet.php">the original</a> on 2007-08-16<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Roku+-+SoundBridge+Internet+Radio&rft_id=http%3A%2F%2Fwww.rokulabs.com%2Fproducts_soundbridge_internet.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-wmmusic-50"><span class="mw-cite-backlink"><b><a href="#cite_ref-wmmusic_50-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/music/default.aspx">"Windows Media: Music"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060415235414/http://www.microsoft.com/windows/windowsmedia/music/default.aspx">Archived</a> from the original on 2006-04-15.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Windows+Media%3A+Music&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindows%2Fwindowsmedia%2Fmusic%2Fdefault.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-rjamorim-51"><span class="mw-cite-backlink"><b><a href="#cite_ref-rjamorim_51-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAmorim" class="citation web cs1">Amorim, Roberto. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090123124822/http://rjamorim.com/test/multiformat128/results.html">"Results of Multiformat at 128 kbit/s public Listening Test"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.rjamorim.com/test/multiformat128/results.html">the original</a> on 2009-01-23.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Results+of+Multiformat+at+128+kbit%2Fs+public+Listening+Test&rft.aulast=Amorim&rft.aufirst=Roberto&rft_id=http%3A%2F%2Fwww.rjamorim.com%2Ftest%2Fmultiformat128%2Fresults.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-52"><span class="mw-cite-backlink"><b><a href="#cite_ref-52">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.mp3developments.com/article4.php">"Lossy Audio Formats"</a>. MP3Developments. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070815110114/http://www.mp3developments.com/article4.php">Archived</a> from the original on 2007-08-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Lossy+Audio+Formats&rft.pub=MP3Developments&rft_id=http%3A%2F%2Fwww.mp3developments.com%2Farticle4.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-53"><span class="mw-cite-backlink"><b><a href="#cite_ref-53">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071015090021/http://streamingmedia.com/article.asp?id=6637">"Codec Rivalry Spurs Development"</a>. streamingmedia.com Codec. Archived from <a rel="nofollow" class="external text" href="http://www.streamingmedia.com/article.asp?id=6637">the original</a> on 2007-10-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Codec+Rivalry+Spurs+Development&rft.pub=streamingmedia.com+Codec&rft_id=http%3A%2F%2Fwww.streamingmedia.com%2Farticle.asp%3Fid%3D6637&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-54"><span class="mw-cite-backlink"><b><a href="#cite_ref-54">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windows/windowsmedia/compare/audiocompare.aspx">Microsoft's summary of the study</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024035924/http://www.microsoft.com/windows/windowsmedia/compare/audiocompare.aspx">Archived</a> 2007-10-24 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. <a rel="nofollow" class="external text" href="http://www.nstl.com/reports/Final%20MSAudio%20Report.pdf">Full report from NSTL</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071128082513/http://www.nstl.com/reports/Final%20MSAudio%20Report.pdf">Archived</a> 2007-11-28 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</span> </li> <li id="cite_note-vlc-55"><span class="mw-cite-backlink"><b><a href="#cite_ref-vlc_55-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVideoLAN_team" class="citation web cs1">VideoLAN team. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100103042927/http://www.videolan.org/vlc/features.php?cat=audio">"VLC playback Features"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.videolan.org/vlc/features.php?cat=audio">the original</a> on 2010-01-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-01-03</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=VLC+playback+Features&rft.au=VideoLAN+team&rft_id=http%3A%2F%2Fwww.videolan.org%2Fvlc%2Ffeatures.php%3Fcat%3Daudio&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-mpc-hc-56"><span class="mw-cite-backlink"><b><a href="#cite_ref-mpc-hc_56-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://mpc-hc.sourceforge.net/media-player-features.html">"Media Player Classic - Player Features"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110816013457/http://mpc-hc.sourceforge.net/media-player-features.html">Archived</a> from the original on 2011-08-16<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Media+Player+Classic+-+Player+Features&rft_id=http%3A%2F%2Fmpc-hc.sourceforge.net%2Fmedia-player-features.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-newsdotcom-57"><span class="mw-cite-backlink"><b><a href="#cite_ref-newsdotcom_57-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShankland2006" class="citation web cs1">Shankland, Stephen (17 August 2006). <a rel="nofollow" class="external text" href="https://www.cnet.com/news/real-to-plug-windows-media-support-into-linux-1/">"Real to plug Windows media support into Linux"</a>. <i><a href="/wiki/CNET" title="CNET">CNET</a></i>. <a href="/wiki/CBS_Interactive" class="mw-redirect" title="CBS Interactive">CBS Interactive</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160424152726/http://www.cnet.com/news/real-to-plug-windows-media-support-into-linux-1/">Archived</a> from the original on 24 April 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">5 April</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CNET&rft.atitle=Real+to+plug+Windows+media+support+into+Linux&rft.date=2006-08-17&rft.aulast=Shankland&rft.aufirst=Stephen&rft_id=http%3A%2F%2Fwww.cnet.com%2Fnews%2Freal-to-plug-windows-media-support-into-linux-1%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-wmp9mac-58"><span class="mw-cite-backlink"><b><a href="#cite_ref-wmp9mac_58-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/mac/downloads.aspx?pid=download&location=/mac/download/misc/winmp_osx.xml&secid=80&ssid=8&flgnosysreq=True">"Windows Media Player 9 for Mac OS X"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070821192229/http://www.microsoft.com/mac/downloads.aspx?pid=download&location=%2Fmac%2Fdownload%2Fmisc%2Fwinmp_osx.xml&secid=80&ssid=8&flgnosysreq=True">Archived</a> from the original on 2007-08-21.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Windows+Media+Player+9+for+Mac+OS+X&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fmac%2Fdownloads.aspx%3Fpid%3Ddownload%26location%3D%2Fmac%2Fdownload%2Fmisc%2Fwinmp_osx.xml%26secid%3D80%26ssid%3D8%26flgnosysreq%3DTrue&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-flip4mac-59"><span class="mw-cite-backlink"><b><a href="#cite_ref-flip4mac_59-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/mac/otherproducts/otherproducts.aspx?pid=windowsmedia">"Important information for Windows Media Player for Mac users"</a>. <i><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070822133715/http://www.microsoft.com/mac/otherproducts/otherproducts.aspx?pid=windowsmedia">Archived</a> from the original on 2007-08-22.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft&rft.atitle=Important+information+for+Windows+Media+Player+for+Mac+users&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fmac%2Fotherproducts%2Fotherproducts.aspx%3Fpid%3Dwindowsmedia&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-flip4macwmavoice-60"><span class="mw-cite-backlink"><b><a href="#cite_ref-flip4macwmavoice_60-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090701100022/http://forum.telestream.net/forum/messageview.aspx?catid=9&threadid=3052">"Flip4Mac forum post discussing WMA Voice support"</a>. Archived from <a rel="nofollow" class="external text" href="http://forum.telestream.net/forum/messageview.aspx?catid=9&threadid=3052">the original</a> on 2009-07-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-01-26</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Flip4Mac+forum+post+discussing+WMA+Voice+support&rft_id=http%3A%2F%2Fforum.telestream.net%2Fforum%2Fmessageview.aspx%3Fcatid%3D9%26threadid%3D3052&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-61"><span class="mw-cite-backlink"><b><a href="#cite_ref-61">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCooper2023" class="citation web cs1">Cooper (27 February 2023). <a rel="nofollow" class="external text" href="https://www.videoconverterfactory.com/tips/play-wma-on-android.html">"Three Methods of How to Play WMA on Android"</a>. <i>WonderFox</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=WonderFox&rft.atitle=Three+Methods+of+How+to+Play+WMA+on+Android&rft.date=2023-02-27&rft.au=Cooper&rft_id=https%3A%2F%2Fwww.videoconverterfactory.com%2Ftips%2Fplay-wma-on-android.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-realplayerwma-62"><span class="mw-cite-backlink"><b><a href="#cite_ref-realplayerwma_62-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://real.custhelp.com/cgi-bin/real.cfg/php/enduser/std_adp.php?p_faqid=3746&p_created=&p_sid=F*jLGDIi&p_lva=1085180089&p_sp=4494&p_li=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTA3JnBfcHJvZHM9MywxMSZwX2NhdHM9JnBfcHY9Mi4xMSZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX25sJnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9Y29weSBDRCBXTUE*cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTgmcF9wcm9kcz0zLDExJnBfY2F0cz0mcF9wdj0xLjM7Mi51MCZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX25sJnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9V01B&p_prod_lvl1=3&p_prod_lvl2=11&tabName=tab0&p_topview=1">"RealPlayer Customer Support: What formats can I use to record tracks from a CD with RealPlayer?"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=RealPlayer+Customer+Support%3A+What+formats+can+I+use+to+record+tracks+from+a+CD+with+RealPlayer%3F&rft_id=http%3A%2F%2Freal.custhelp.com%2Fcgi-bin%2Freal.cfg%2Fphp%2Fenduser%2Fstd_adp.php%3Fp_faqid%3D3746%26p_created%3D%26p_sid%3DF%2AjLGDIi%26p_lva%3D1085180089%26p_sp%3D4494%26p_li%3DcF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTA3JnBfcHJvZHM9MywxMSZwX2NhdHM9JnBfcHY9Mi4xMSZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX25sJnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9Y29weSBDRCBXTUE%2AcF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTgmcF9wcm9kcz0zLDExJnBfY2F0cz0mcF9wdj0xLjM7Mi51MCZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX25sJnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9V01B%26p_prod_lvl1%3D3%26p_prod_lvl2%3D11%26tabName%3Dtab0%26p_topview%3D1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged August 2018">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> <li id="cite_note-premiere-63"><span class="mw-cite-backlink"><b><a href="#cite_ref-premiere_63-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://kb.adobe.com/selfservice/viewContent.do?externalId=332612">Supported file formats in Adobe Premiere Pro 2.0</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071013122312/http://kb.adobe.com/selfservice/viewContent.do?externalId=332612">Archived</a> 2007-10-13 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>,</span> </li> <li id="cite_note-audition-64"><span class="mw-cite-backlink"><b><a href="#cite_ref-audition_64-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20071015002521/http://kb.adobe.com/selfservice/viewContent.do?externalId=329174">"Supported file formats (Adobe Audition 2.0)"</a>. Archived from <a rel="nofollow" class="external text" href="http://kb.adobe.com/selfservice/viewContent.do?externalId=329174">the original</a> on 2007-10-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-08-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Supported+file+formats+%28Adobe+Audition+2.0%29&rft_id=http%3A%2F%2Fkb.adobe.com%2Fselfservice%2FviewContent.do%3FexternalId%3D329174&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-soundbooth-65"><span class="mw-cite-backlink"><b><a href="#cite_ref-soundbooth_65-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://kb.adobe.com/selfservice/viewContent.do?externalId=kb401643">"Soundbooth CS3 supported file formats"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071015002526/http://kb.adobe.com/selfservice/viewContent.do?externalId=kb401643">Archived</a> from the original on 2007-10-15.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Soundbooth+CS3+supported+file+formats&rft_id=http%3A%2F%2Fkb.adobe.com%2Fselfservice%2FviewContent.do%3FexternalId%3Dkb401643&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> <li id="cite_note-onenote-66"><span class="mw-cite-backlink"><b><a href="#cite_ref-onenote_66-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/837846">"General information about the audio functionality in OneNote 2003"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20071024201509/http://support.microsoft.com/kb/837846">Archived</a> from the original on 2007-10-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=General+information+about+the+audio+functionality+in+OneNote+2003&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F837846&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+Media+Audio" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_Media_Audio&action=edit&section=15" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080211194317/http://www.microsoft.com/windowsmedia">Windows Media homepage at Microsoft</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Multimedia_compression_and_container_formats462" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Compression_formats" title="Template:Compression formats"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Compression_formats" title="Template talk:Compression formats"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Compression_formats" title="Special:EditPage/Template:Compression formats"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Multimedia_compression_and_container_formats462" style="font-size:114%;margin:0 4em"><a href="/wiki/Multimedia" title="Multimedia">Multimedia</a> <a href="/wiki/Data_compression" title="Data compression">compression</a> and <a href="/wiki/Container_format_(computing)" class="mw-redirect" title="Container format (computing)">container</a> formats</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Video_coding_format" title="Video coding format">Video<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>, <br /><a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">MPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DV_(video_format)" title="DV (video format)">DV</a></li> <li><a href="/wiki/Motion_JPEG" title="Motion JPEG">MJPEG</a></li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">Motion JPEG 2000</a></li> <li><a href="/wiki/MPEG-1" title="MPEG-1">MPEG-1</a></li> <li><a href="/wiki/MPEG-2" title="MPEG-2">MPEG-2</a> <ul><li><a href="/wiki/H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">Part 2</a></li></ul></li> <li><a href="/wiki/MPEG-4" title="MPEG-4">MPEG-4</a> <ul><li><a href="/wiki/MPEG-4_Part_2" title="MPEG-4 Part 2">Part 2 / ASP</a></li> <li><a href="/wiki/H.264/MPEG-4_AVC" class="mw-redirect" title="H.264/MPEG-4 AVC">Part 10 / AVC</a></li> <li><a href="/wiki/MPEG-4_IVC" class="mw-redirect" title="MPEG-4 IVC">Part 33 / IVC</a></li></ul></li> <li><a href="/wiki/MPEG-H" title="MPEG-H">MPEG-H</a> <ul><li><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">Part 2 / HEVC</a></li></ul></li> <li><a href="/w/index.php?title=MPEG-I&action=edit&redlink=1" class="new" title="MPEG-I (page does not exist)">MPEG-I</a> <ul><li><a href="/wiki/Versatile_Video_Coding" title="Versatile Video Coding">Part 3 / VVC</a></li></ul></li> <li><a href="/wiki/MPEG-5" class="mw-redirect" title="MPEG-5">MPEG-5</a> <ul><li><a href="/wiki/Essential_Video_Coding" title="Essential Video Coding">Part 1 / EVC</a></li> <li><a href="/wiki/LCEVC" title="LCEVC">Part 2 / LCEVC</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a>, <a href="/wiki/Video_Coding_Experts_Group" title="Video Coding Experts Group">VCEG</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/H.120" title="H.120">H.120</a></li> <li><a href="/wiki/H.261" title="H.261">H.261</a></li> <li><a href="/wiki/H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">H.262</a></li> <li><a href="/wiki/H.263" title="H.263">H.263</a></li> <li><a href="/wiki/Advanced_Video_Coding" title="Advanced Video Coding">H.264 / AVC</a></li> <li><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">H.265 / HEVC</a></li> <li><a href="/wiki/Versatile_Video_Coding" title="Versatile Video Coding">H.266 / VVC</a></li> <li><a href="/w/index.php?title=H.267&action=edit&redlink=1" class="new" title="H.267 (page does not exist)">H.267 / Enhanced Coding Model</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Society_of_Motion_Picture_and_Television_Engineers" title="Society of Motion Picture and Television Engineers">SMPTE</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/VC-1" title="VC-1">VC-1</a></li> <li><a href="/wiki/Dirac_(video_compression_format)" title="Dirac (video compression format)">VC-2</a></li> <li><a href="/wiki/Avid_DNxHD" title="Avid DNxHD">VC-3</a></li> <li><a href="/wiki/CineForm" title="CineForm">VC-5</a></li> <li><a href="/wiki/VC-6" title="VC-6">VC-6</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/On2_Technologies" title="On2 Technologies">TrueMotion</a> and AOMedia</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/On2_Technologies#TrueMotion_S" title="On2 Technologies">TrueMotion S</a></li> <li><a href="/wiki/VP3" title="VP3">VP3</a></li> <li><a href="/wiki/VP6" title="VP6">VP6</a></li> <li><a href="/wiki/VP7" class="mw-redirect" title="VP7">VP7</a></li> <li><a href="/wiki/VP8" title="VP8">VP8</a></li> <li><a href="/wiki/VP9" title="VP9">VP9</a></li> <li><a href="/wiki/AV1" title="AV1">AV1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Chinese Standard</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS1 P2/AVS+</a>(GB/T 20090.2/16)</li> <li><a href="/wiki/Audio_Video_Standard#Second_generation" title="Audio Video Standard">AVS2 P2</a>(GB/T 33475.2,GY/T 299.1) <ul><li>HDR Vivid(GY/T 358)</li></ul></li> <li>AVS3 P2(GY/T 368)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_Video" title="Apple Video">Apple Video</a></li> <li><a href="/wiki/Audio_Video_Standard" title="Audio Video Standard">AVS</a></li> <li><a href="/wiki/Bink_Video" title="Bink Video">Bink</a></li> <li><a href="/wiki/Cinepak" title="Cinepak">Cinepak</a></li> <li><a href="/wiki/Daala" title="Daala">Daala</a></li> <li><a href="/wiki/Digital_Video_Interactive" title="Digital Video Interactive">DVI</a></li> <li><a href="/wiki/FFV1" title="FFV1">FFV1</a></li> <li><a href="/wiki/Huffyuv" title="Huffyuv">Huffyuv</a></li> <li><a href="/wiki/Indeo" title="Indeo">Indeo</a></li> <li><a href="/wiki/Lagarith" title="Lagarith">Lagarith</a></li> <li><a href="/wiki/Microsoft_Video_1" title="Microsoft Video 1">Microsoft Video 1</a></li> <li><a href="/wiki/MSU_Lossless_Video_Codec" title="MSU Lossless Video Codec">MSU Lossless</a></li> <li><a href="/wiki/OMS_Video" title="OMS Video">OMS Video</a></li> <li><a href="/wiki/Pixlet" title="Pixlet">Pixlet</a></li> <li><a href="/wiki/Apple_ProRes" title="Apple ProRes">ProRes</a> <ul><li><a href="/wiki/ProRes_422" class="mw-redirect" title="ProRes 422">422</a></li> <li><a href="/wiki/ProRes_4444" class="mw-redirect" title="ProRes 4444">4444</a></li></ul></li> <li>QuickTime <ul><li><a href="/wiki/QuickTime_Animation" title="QuickTime Animation">Animation</a></li> <li><a href="/wiki/QuickTime_Graphics" title="QuickTime Graphics">Graphics</a></li></ul></li> <li><a href="/wiki/RealVideo" title="RealVideo">RealVideo</a></li> <li><a href="/wiki/RTVideo" title="RTVideo">RTVideo</a></li> <li><a href="/wiki/SheerVideo" title="SheerVideo">SheerVideo</a></li> <li><a href="/wiki/Smacker_video" title="Smacker video">Smacker</a></li> <li><a href="/wiki/Sorenson_Media" title="Sorenson Media">Sorenson Video/Spark</a></li> <li><a href="/wiki/Theora" title="Theora">Theora</a></li> <li><a href="/wiki/Thor_(video_codec)" title="Thor (video codec)">Thor</a></li> <li><a href="/wiki/Ut_Video_Codec_Suite" title="Ut Video Codec Suite">Ut</a></li> <li><a href="/wiki/Windows_Media_Video" title="Windows Media Video">WMV</a></li> <li><a href="/wiki/RatDVD" title="RatDVD">XEB</a></li> <li><a href="/wiki/YULS" title="YULS">YULS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Audio_coding_format" title="Audio coding format">Audio<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>,<br /> <a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">MPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-1_Audio_Layer_II" title="MPEG-1 Audio Layer II">MPEG-1 Layer II</a> <ul><li><a href="/wiki/MPEG_Multichannel" title="MPEG Multichannel">Multichannel</a></li></ul></li> <li><a href="/wiki/MPEG-1_Audio_Layer_I" title="MPEG-1 Audio Layer I">MPEG-1 Layer I</a></li> <li><a href="/wiki/MP3" title="MP3">MPEG-1 Layer III (MP3)</a></li> <li><a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a> <ul><li><a href="/wiki/High-Efficiency_Advanced_Audio_Coding" title="High-Efficiency Advanced Audio Coding">HE-AAC</a></li> <li><a href="/wiki/AAC-LD" title="AAC-LD">AAC-LD</a></li></ul></li> <li><a href="/wiki/MPEG_Surround" title="MPEG Surround">MPEG Surround</a></li> <li><a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">MPEG-4 ALS</a></li> <li><a href="/wiki/MPEG-4_SLS" title="MPEG-4 SLS">MPEG-4 SLS</a></li> <li><a href="/wiki/Super_Audio_CD#DST" title="Super Audio CD">MPEG-4 DST</a></li> <li><a href="/wiki/Harmonic_Vector_Excitation_Coding" title="Harmonic Vector Excitation Coding">MPEG-4 HVXC</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">MPEG-4 CELP</a></li> <li><a href="/wiki/Unified_Speech_and_Audio_Coding" title="Unified Speech and Audio Coding">MPEG-D USAC</a></li> <li><a href="/wiki/MPEG-H_3D_Audio" title="MPEG-H 3D Audio">MPEG-H 3D Audio</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/G.711" title="G.711">G.711</a> <ul><li><a href="/wiki/A-law_algorithm" title="A-law algorithm">A-law</a></li> <li><a href="/wiki/%CE%9C-law_algorithm" title="Μ-law algorithm">µ-law</a></li></ul></li> <li><a href="/wiki/G.718" title="G.718">G.718</a></li> <li><a href="/wiki/G.719" title="G.719">G.719</a></li> <li><a href="/wiki/G.722" title="G.722">G.722</a></li> <li><a href="/wiki/G.722.1" title="G.722.1">G.722.1</a></li> <li><a href="/wiki/Adaptive_Multi-Rate_Wideband" title="Adaptive Multi-Rate Wideband">G.722.2</a></li> <li><a href="/wiki/G.723" title="G.723">G.723</a></li> <li><a href="/wiki/G.723.1" title="G.723.1">G.723.1</a></li> <li><a href="/wiki/G.726" title="G.726">G.726</a></li> <li><a href="/wiki/G.728" title="G.728">G.728</a></li> <li><a href="/wiki/G.729" title="G.729">G.729</a></li> <li><a href="/wiki/G.729.1" title="G.729.1">G.729.1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Opus_(audio_format)" title="Opus (audio format)">Opus</a></li> <li><a href="/wiki/Internet_Low_Bitrate_Codec" title="Internet Low Bitrate Codec">iLBC</a></li> <li><a href="/wiki/Speex" title="Speex">Speex</a></li> <li><a href="/wiki/Vorbis" title="Vorbis">Vorbis</a></li> <li><a href="/wiki/FLAC" title="FLAC">FLAC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/3GPP" title="3GPP">3GPP</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adaptive_Multi-Rate_audio_codec" title="Adaptive Multi-Rate audio codec">AMR</a></li> <li><a href="/wiki/Adaptive_Multi-Rate_Wideband" title="Adaptive Multi-Rate Wideband">AMR-WB</a></li> <li><a href="/wiki/Extended_Adaptive_Multi-Rate_%E2%80%93_Wideband" title="Extended Adaptive Multi-Rate – Wideband">AMR-WB+</a></li> <li><a href="/wiki/Enhanced_Variable_Rate_Codec" title="Enhanced Variable Rate Codec">EVRC</a></li> <li><a href="/wiki/Enhanced_Variable_Rate_Codec_B" title="Enhanced Variable Rate Codec B">EVRC-B</a></li> <li><a href="/wiki/Enhanced_Voice_Services" title="Enhanced Voice Services">EVS</a></li> <li><a href="/wiki/Half_Rate" title="Half Rate">GSM-HR</a></li> <li><a href="/wiki/Full_Rate" title="Full Rate">GSM-FR</a></li> <li><a href="/wiki/Enhanced_full_rate" title="Enhanced full rate">GSM-EFR</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ETSI" class="mw-redirect" title="ETSI">ETSI</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dolby_Digital" title="Dolby Digital">AC-3</a></li> <li><a href="/wiki/Dolby_AC-4" title="Dolby AC-4">AC-4</a></li> <li><a href="/wiki/DTS_(sound_system)" class="mw-redirect" title="DTS (sound system)">DTS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Bluetooth_Special_Interest_Group" title="Bluetooth Special Interest Group">Bluetooth SIG</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SBC_(codec)" title="SBC (codec)">SBC</a></li> <li><a href="/wiki/LC3_(codec)" title="LC3 (codec)">LC3</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Chinese Standard</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS1 P10</a>(GB/T 20090.10)</li> <li><a href="/wiki/Audio_Video_Standard#Second_generation" title="Audio Video Standard">AVS2 P3</a>(GB/T 33475.3) <ul><li><a href="/w/index.php?title=Audio_Vivid&action=edit&redlink=1" class="new" title="Audio Vivid (page does not exist)">Audio Vivid</a>(GY/T 363)</li></ul></li> <li><a href="/wiki/Dynamic_Resolution_Adaptation" title="Dynamic Resolution Adaptation">DRA</a>(GB/T 22726)</li> <li>ExAC(SJ/T 11299.4)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Apple_Lossless_Audio_Codec" title="Apple Lossless Audio Codec">ALAC</a></li> <li><a href="/wiki/Asao_(codec)" title="Asao (codec)">Asao</a></li> <li><a href="/wiki/Adaptive_Transform_Acoustic_Coding" class="mw-redirect" title="Adaptive Transform Acoustic Coding">ATRAC</a></li> <li><a href="/wiki/CELT" title="CELT">CELT</a></li> <li><a href="/wiki/Codec_2" title="Codec 2">Codec 2</a></li> <li><a href="/wiki/Internet_Speech_Audio_Codec" title="Internet Speech Audio Codec">iSAC</a></li> <li><a href="/wiki/Lyra_(codec)" title="Lyra (codec)">Lyra</a></li> <li><a href="/wiki/Mixed-excitation_linear_prediction" title="Mixed-excitation linear prediction">MELP</a></li> <li><a href="/wiki/Monkey%27s_Audio" title="Monkey's Audio">Monkey's Audio</a></li> <li><a href="/wiki/MT9" title="MT9">MT9</a></li> <li><a href="/wiki/Musepack" title="Musepack">Musepack</a></li> <li><a href="/wiki/OptimFROG" title="OptimFROG">OptimFROG</a></li> <li><a href="/wiki/Original_Sound_Quality" title="Original Sound Quality">OSQ</a></li> <li><a href="/wiki/Qualcomm_code-excited_linear_prediction" title="Qualcomm code-excited linear prediction">QCELP</a></li> <li><a href="/wiki/Relaxed_code-excited_linear_prediction" title="Relaxed code-excited linear prediction">RCELP</a></li> <li><a href="/wiki/RealAudio" title="RealAudio">RealAudio</a></li> <li><a href="/wiki/RTAudio" title="RTAudio">RTAudio</a></li> <li><a href="/wiki/Avid_Audio#Sound_Designer_file_formats" title="Avid Audio">SD2</a></li> <li><a href="/wiki/Shorten_file_format" class="mw-redirect" title="Shorten file format">SHN</a></li> <li><a href="/wiki/SILK" title="SILK">SILK</a></li> <li><a href="/wiki/Siren_(codec)" title="Siren (codec)">Siren</a></li> <li><a href="/wiki/Selectable_Mode_Vocoder" title="Selectable Mode Vocoder">SMV</a></li> <li><a href="/wiki/SVOPC" title="SVOPC">SVOPC</a></li> <li>TTA <ul><li>True Audio</li></ul></li> <li><a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a></li> <li><a href="/wiki/Variable-Rate_Multimode_Wideband" title="Variable-Rate Multimode Wideband">VMR-WB</a></li> <li><a href="/wiki/Vector_sum_excited_linear_prediction" title="Vector sum excited linear prediction">VSELP</a></li> <li><a href="/wiki/WavPack" title="WavPack">WavPack</a></li> <li><a class="mw-selflink selflink">WMA</a></li> <li><a href="/wiki/Master_Quality_Authenticated" title="Master Quality Authenticated">MQA</a></li> <li><a href="/wiki/AptX" title="AptX">aptX</a></li> <li><a href="/wiki/AptX#aptX_HD" title="AptX">aptX HD</a></li> <li><a href="/wiki/AptX#aptX_Low_Latency" title="AptX">aptX Low Latency</a></li> <li><a href="/wiki/AptX#aptX_Adaptive" title="AptX">aptX Adaptive</a></li> <li><a href="/wiki/LDAC_(codec)" title="LDAC (codec)">LDAC</a></li> <li><a href="/wiki/LHDC_(codec)" title="LHDC (codec)">LHDC</a></li> <li><a href="/wiki/LHDC_(codec)#LLAC" title="LHDC (codec)">LLAC</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Image_compression" title="Image compression">Image<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>, <a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a>, <br /><a href="/wiki/World_Wide_Web_Consortium" title="World Wide Web Consortium">W3C</a>, <a href="/wiki/ITU-T" title="ITU-T">ITU-T</a>, <a href="/wiki/Joint_Photographic_Experts_Group" title="Joint Photographic Experts Group">JPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Group_4_compression" title="Group 4 compression">CCITT Group 4</a></li> <li><a href="/wiki/GIF" title="GIF">GIF</a></li> <li><a href="/wiki/High_Efficiency_Image_File_Format#HEIC:_HEVC_in_HEIF" title="High Efficiency Image File Format">HEIC / HEIF</a></li> <li><a href="/wiki/High_Efficiency_Video_Coding#Main_Still_Picture" title="High Efficiency Video Coding">HEVC</a></li> <li><a href="/wiki/JBIG" title="JBIG">JBIG</a></li> <li><a href="/wiki/JBIG2" title="JBIG2">JBIG2</a></li> <li><a href="/wiki/JPEG" title="JPEG">JPEG</a></li> <li><a href="/wiki/JPEG_2000" title="JPEG 2000">JPEG 2000</a></li> <li><a href="/wiki/JPEG-LS" class="mw-redirect" title="JPEG-LS">JPEG-LS</a></li> <li><a href="/wiki/JPEG_XL" title="JPEG XL">JPEG XL</a></li> <li><a href="/wiki/JPEG_XR" title="JPEG XR">JPEG XR</a></li> <li><a href="/wiki/JPEG_XS" title="JPEG XS">JPEG XS</a></li> <li><a href="/wiki/JPEG_XT" title="JPEG XT">JPEG XT</a></li> <li><a href="/wiki/Portable_Network_Graphics" class="mw-redirect" title="Portable Network Graphics">PNG</a></li> <li><a href="/wiki/TIFF" title="TIFF">TIFF</a></li> <li><a href="/wiki/TIFF/EP" title="TIFF/EP">TIFF/EP</a></li> <li><a href="/wiki/TIFF/IT" class="mw-redirect" title="TIFF/IT">TIFF/IT</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/APNG" title="APNG">APNG</a></li> <li><a href="/wiki/AV1" title="AV1">AV1</a></li> <li><a href="/wiki/AVIF" title="AVIF">AVIF</a></li> <li><a href="/wiki/Better_Portable_Graphics" title="Better Portable Graphics">BPG</a></li> <li><a href="/wiki/DjVu" title="DjVu">DjVu</a></li> <li><a href="/wiki/OpenEXR" title="OpenEXR">EXR</a></li> <li><a href="/wiki/Free_Lossless_Image_Format" title="Free Lossless Image Format">FLIF</a></li> <li><a href="/wiki/ICER_(file_format)" title="ICER (file format)">ICER</a></li> <li><a href="/wiki/Multiple-image_Network_Graphics" title="Multiple-image Network Graphics">MNG</a></li> <li><a href="/wiki/Progressive_Graphics_File" title="Progressive Graphics File">PGF</a></li> <li><a href="/wiki/QOI_(image_format)" title="QOI (image format)">QOI</a></li> <li><a href="/wiki/QuickTime_VR" title="QuickTime VR">QTVR</a></li> <li><a href="/wiki/Wireless_Application_Protocol_Bitmap_Format" title="Wireless Application Protocol Bitmap Format">WBMP</a></li> <li><a href="/wiki/WebP" title="WebP">WebP</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Digital_container_format" class="mw-redirect" title="Digital container format">Containers</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG_elementary_stream" title="MPEG elementary stream">MPEG-ES</a> <ul><li><a href="/wiki/Packetized_elementary_stream" title="Packetized elementary stream">MPEG-PES</a></li></ul></li> <li><a href="/wiki/MPEG_program_stream" title="MPEG program stream">MPEG-PS</a></li> <li><a href="/wiki/MPEG_transport_stream" title="MPEG transport stream">MPEG-TS</a></li> <li><a href="/wiki/ISO/IEC_base_media_file_format" class="mw-redirect" title="ISO/IEC base media file format">ISO/IEC base media file format</a></li> <li><a href="/wiki/MPEG-4_Part_14" class="mw-redirect" title="MPEG-4 Part 14">MPEG-4 Part 14</a> (MP4)</li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">Motion JPEG 2000</a></li> <li><a href="/wiki/MPEG-21" title="MPEG-21">MPEG-21 Part 9</a></li> <li><a href="/wiki/MPEG_media_transport" title="MPEG media transport">MPEG media transport</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-2#Systems" title="MPEG-2">H.222.0</a></li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">T.802</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Real-time_Transport_Protocol" title="Real-time Transport Protocol">RTP</a></li> <li><a href="/wiki/Ogg" title="Ogg">Ogg</a></li> <li><a href="/wiki/Matroska" title="Matroska">Matroska</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Society_of_Motion_Picture_and_Television_Engineers" title="Society of Motion Picture and Television Engineers">SMPTE</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/General_Exchange_Format" title="General Exchange Format">GXF</a></li> <li><a href="/wiki/Material_Exchange_Format" title="Material Exchange Format">MXF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3GP_and_3G2" title="3GP and 3G2">3GP and 3G2</a></li> <li><a href="/wiki/AMV_video_format" title="AMV video format">AMV</a></li> <li><a href="/wiki/Advanced_Systems_Format" title="Advanced Systems Format">ASF</a></li> <li><a href="/wiki/Audio_Interchange_File_Format" title="Audio Interchange File Format">AIFF</a></li> <li><a href="/wiki/Audio_Video_Interleave" title="Audio Video Interleave">AVI</a></li> <li><a href="/wiki/Au_file_format" title="Au file format">AU</a></li> <li><a href="/wiki/Better_Portable_Graphics" title="Better Portable Graphics">BPG</a></li> <li><a href="/wiki/Bink_Video" title="Bink Video">Bink</a> <ul><li><a href="/wiki/Smacker_video" title="Smacker video">Smacker</a></li></ul></li> <li><a href="/wiki/BMP_file_format" title="BMP file format">BMP</a></li> <li><a href="/wiki/DivX#DivX_Media_Format_(DMF)" title="DivX">DivX Media Format</a></li> <li><a href="/wiki/Enhanced_VOB" title="Enhanced VOB">EVO</a></li> <li><a href="/wiki/Flash_Video" title="Flash Video">Flash Video</a></li> <li><a href="/wiki/High_Efficiency_Image_File_Format" title="High Efficiency Image File Format">HEIF</a></li> <li><a href="/wiki/Interchange_File_Format" title="Interchange File Format">IFF</a></li> <li><a href="/wiki/.m2ts" title=".m2ts">M2TS</a></li> <li><a href="/wiki/Matroska" title="Matroska">Matroska</a> <ul><li><a href="/wiki/WebM" title="WebM">WebM</a></li></ul></li> <li><a href="/wiki/QuickTime_File_Format" title="QuickTime File Format">QuickTime File Format</a></li> <li><a href="/wiki/RatDVD" title="RatDVD">RatDVD</a></li> <li><a href="/wiki/RealMedia" title="RealMedia">RealMedia</a></li> <li><a href="/wiki/Resource_Interchange_File_Format" title="Resource Interchange File Format">RIFF</a> <ul><li><a href="/wiki/WAV" title="WAV">WAV</a></li></ul></li> <li><a href="/wiki/MOD_and_TOD" title="MOD and TOD">MOD and TOD</a></li> <li><a href="/wiki/VOB" title="VOB">VOB, IFO and BUP</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Collaborations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NETVC" title="NETVC">NETVC</a></li> <li><a href="/wiki/MPEG_LA" title="MPEG LA">MPEG LA</a></li> <li><a href="/wiki/Alliance_for_Open_Media" title="Alliance for Open Media">Alliance for Open Media</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression" title="Data compression">Methods</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Entropy_encoding" class="mw-redirect" title="Entropy encoding">Entropy</a> <ul><li><a href="/wiki/Arithmetic_coding" title="Arithmetic coding">Arithmetic</a></li> <li><a href="/wiki/Huffman_coding" title="Huffman coding">Huffman</a></li> <li><a href="/wiki/Modified_Huffman_coding" title="Modified Huffman coding">Modified</a></li></ul></li> <li><a href="/wiki/Linear_predictive_coding" title="Linear predictive coding">LPC</a> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">CELP</a></li> <li><a href="/wiki/Line_spectral_pairs" title="Line spectral pairs">LSP</a></li> <li><a href="/wiki/Warped_linear_predictive_coding" title="Warped linear predictive coding">WLPC</a></li></ul></li> <li><a href="/wiki/Lossless_compression" title="Lossless compression">Lossless</a></li> <li><a href="/wiki/Lossy_compression" title="Lossy compression">Lossy</a></li> <li><a href="/wiki/LZ77_and_LZ78" title="LZ77 and LZ78">LZ</a> <ul><li><a href="/wiki/DEFLATE" class="mw-redirect" title="DEFLATE">DEFLATE</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch" title="Lempel–Ziv–Welch">LZW</a></li></ul></li> <li><a href="/wiki/Pulse-code_modulation" title="Pulse-code modulation">PCM</a> <ul><li><a href="/wiki/A-law_algorithm" title="A-law algorithm">A-law</a></li> <li><a href="/wiki/%CE%9C-law_algorithm" title="Μ-law algorithm">µ-law</a></li> <li><a href="/wiki/Adaptive_differential_pulse-code_modulation" title="Adaptive differential pulse-code modulation">ADPCM</a></li> <li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a></li></ul></li> <li><a href="/wiki/Transform_coding" title="Transform coding">Transforms</a> <ul><li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">DCT</a></li> <li><a href="/wiki/Fast_Fourier_transform" title="Fast Fourier transform">FFT</a></li> <li><a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">MDCT</a></li> <li><a href="/wiki/Wavelet" title="Wavelet">Wavelet</a> <ul><li><a href="/wiki/Daubechies_wavelet" title="Daubechies wavelet">Daubechies</a></li> <li><a href="/wiki/Discrete_wavelet_transform" title="Discrete wavelet transform">DWT</a></li></ul></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_audio_coding_formats" title="Comparison of audio coding formats">Comparison of audio coding formats</a></li> <li><a href="/wiki/Comparison_of_video_codecs" title="Comparison of video codecs">Comparison of video codecs</a></li> <li><a href="/wiki/List_of_codecs" title="List of codecs">List of codecs</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>See <a href="/wiki/Template:Compression_methods" title="Template:Compression methods">Compression methods</a> for techniques and <a href="/wiki/Template:Compression_software" title="Template:Compression software">Compression software</a> for codecs</div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox490" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a>: National <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q2194#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb136214262">France</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://data.bnf.fr/ark:/12148/cb136214262">BnF data</a></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Windows_Media_Audio&oldid=1276452729">https://en.wikipedia.org/w/index.php?title=Windows_Media_Audio&oldid=1276452729</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Audio_codecs" title="Category:Audio codecs">Audio codecs</a></li><li><a href="/wiki/Category:Audio_file_formats" title="Category:Audio file formats">Audio file formats</a></li><li><a href="/wiki/Category:Microsoft_proprietary_codecs" title="Category:Microsoft proprietary codecs">Microsoft proprietary codecs</a></li><li><a href="/wiki/Category:Windows_audio" title="Category:Windows audio">Windows audio</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Webarchive_template_wayback_links" title="Category:Webarchive template wayback links">Webarchive template wayback links</a></li><li><a href="/wiki/Category:All_articles_with_dead_external_links" title="Category:All articles with dead external links">All articles with dead external links</a></li><li><a href="/wiki/Category:Articles_with_dead_external_links_from_August_2018" title="Category:Articles with dead external links from August 2018">Articles with dead external links from August 2018</a></li><li><a href="/wiki/Category:Articles_with_permanently_dead_external_links" title="Category:Articles with permanently dead external links">Articles with permanently dead external links</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:All_articles_with_unsourced_statements" title="Category:All articles with unsourced statements">All articles with unsourced statements</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_April_2021" title="Category:Articles with unsourced statements from April 2021">Articles with unsourced statements from April 2021</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_May_2010" title="Category:Articles with unsourced statements from May 2010">Articles with unsourced statements from May 2010</a></li><li><a href="/wiki/Category:Articles_with_dead_external_links_from_August_2019" title="Category:Articles with dead external links from August 2019">Articles with dead external links from August 2019</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_January_2016" title="Category:Articles with unsourced statements from January 2016">Articles with unsourced statements from January 2016</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_March_2012" title="Category:Articles with unsourced statements from March 2012">Articles with unsourced statements from March 2012</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 18 February 2025, at 22:55<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Windows_Media_Audio&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><picture><source media="(min-width: 500px)" srcset="/static/images/footer/wikimedia-button.svg" width="84" height="29"><img src="/static/images/footer/wikimedia.svg" width="25" height="25" alt="Wikimedia Foundation" lang="en" loading="lazy"></picture></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><picture><source media="(min-width: 500px)" srcset="/w/resources/assets/poweredby_mediawiki.svg" width="88" height="31"><img src="/w/resources/assets/mediawiki_compact.svg" alt="Powered by MediaWiki" width="25" height="25" loading="lazy"></picture></a></li> </ul> </footer> </div> </div> </div> <div class="vector-header-container vector-sticky-header-container"> <div id="vector-sticky-header" class="vector-sticky-header"> <div class="vector-sticky-header-start"> <div class="vector-sticky-header-icon-start vector-button-flush-left vector-button-flush-right" aria-hidden="true"> <button class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-sticky-header-search-toggle" tabindex="-1" data-event-name="ui.vector-sticky-search-form.icon"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </button> </div> <div role="search" class="vector-search-box-vue vector-search-box-show-thumbnail vector-search-box"> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail"> <form action="/w/index.php" id="vector-sticky-search-form" class="cdx-search-input cdx-search-input--has-end-button"> <div class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia"> <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <div class="vector-sticky-header-context-bar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-sticky-header-toc" class="vector-dropdown mw-portlet mw-portlet-sticky-header-toc vector-sticky-header-toc vector-button-flush-left" > <input type="checkbox" id="vector-sticky-header-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-sticky-header-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-sticky-header-toc-label" for="vector-sticky-header-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-sticky-header-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div class="vector-sticky-header-context-bar-primary" aria-hidden="true" ><span class="mw-page-title-main">Windows Media Audio</span></div> </div> </div> <div class="vector-sticky-header-end" aria-hidden="true"> <div class="vector-sticky-header-icons"> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>30 languages</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Add topic</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-d8647bfd6-trx9s","wgBackendResponseTime":187,"wgPageParseReport":{"limitreport":{"cputime":"0.667","walltime":"0.878","ppvisitednodes":{"value":5147,"limit":1000000},"postexpandincludesize":{"value":199984,"limit":2097152},"templateargumentsize":{"value":5353,"limit":2097152},"expansiondepth":{"value":19,"limit":100},"expensivefunctioncount":{"value":10,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":242877,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 741.623 1 -total"," 43.80% 324.859 1 Template:Reflist"," 36.50% 270.688 63 Template:Cite_web"," 14.73% 109.268 5 Template:Navbox"," 14.69% 108.920 1 Template:Compression_formats"," 9.97% 73.946 6 Template:Fix"," 9.60% 71.214 4 Template:Citation_needed"," 9.44% 70.046 1 Template:Short_description"," 9.31% 69.067 1 Template:Infobox_file_format"," 8.86% 65.718 1 Template:Infobox"]},"scribunto":{"limitreport-timeusage":{"value":"0.398","limit":"10.000"},"limitreport-memusage":{"value":7116068,"limit":52428800}},"cachereport":{"origin":"mw-api-ext.eqiad.main-6cf4d6c868-kd4gd","timestamp":"20250218225558","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Windows Media Audio","url":"https:\/\/en.wikipedia.org\/wiki\/Windows_Media_Audio","sameAs":"http:\/\/www.wikidata.org\/entity\/Q2194","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q2194","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2001-11-19T01:47:49Z","dateModified":"2025-02-18T22:55:54Z","headline":"audio data compression technology"}</script> </body> </html>