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</div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">AC'97</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. 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Spanish" lang="es" hreflang="es" data-title="AC'97" 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/Audio_Codec_%2797" title="Audio Codec '97 – French" lang="fr" hreflang="fr" data-title="Audio Codec '97" 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/AC%2797" title="AC'97 – Korean" lang="ko" hreflang="ko" data-title="AC'97" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/AC97" title="AC97 – Italian" lang="it" hreflang="it" data-title="AC97" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/AC97" title="AC97 – Dutch" lang="nl" hreflang="nl" data-title="AC97" 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/Audio_Codec_97" title="Audio Codec 97 – Japanese" lang="ja" hreflang="ja" data-title="Audio Codec 97" 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-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/AC%E2%80%9997" title="AC’97 – Polish" lang="pl" hreflang="pl" data-title="AC’97" 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/Audio_Codec_97" title="Audio Codec 97 – Portuguese" lang="pt" hreflang="pt" data-title="Audio Codec 97" 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/AC%E2%80%9997" title="AC’97 – Russian" lang="ru" hreflang="ru" data-title="AC’97" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/AC%E2%80%9997" title="AC’97 – Finnish" lang="fi" hreflang="fi" data-title="AC’97" 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/AC97" title="AC97 – Swedish" lang="sv" hreflang="sv" data-title="AC97" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/AC97" title="AC97 – Ukrainian" lang="uk" hreflang="uk" data-title="AC97" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/AC97" title="AC97 – Chinese" lang="zh" hreflang="zh" data-title="AC97" 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 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.ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/AC%2797" title="Special:EditPage/AC'97">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22AC%2797%22">"AC'97"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22AC%2797%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22AC%2797%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22AC%2797%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22AC%2797%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22AC%2797%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">December 2019</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p><b>AC'97</b> (<i>Audio Codec '97;</i> also <b>MC'97</b> for <i>Modem Codec '97</i>) is an <a href="/wiki/Sound_reproduction" class="mw-redirect" title="Sound reproduction">audio</a> <a href="/wiki/Codec" title="Codec">codec</a> standard developed by <a href="/wiki/Intel_Architecture_Labs" title="Intel Architecture Labs">Intel Architecture Labs</a> and various codec manufacturers in 1997. The standard was used in <a href="/wiki/Motherboard" title="Motherboard">motherboards</a>, <a href="/wiki/Modem" title="Modem">modems</a>, and <a href="/wiki/Sound_card" title="Sound card">sound cards</a>. </p><p>The specification covers two types of components, and the <b>AC-Link</b> digital interface between them: </p> <ol><li>an AC'97 <i>digital controller</i> (DC97), which is typically built into the <a href="/wiki/Southbridge_(computing)" title="Southbridge (computing)">southbridge</a> of the <a href="/wiki/Chipset" title="Chipset">chipset</a>, and</li> <li>an AC'97 audio and/or modem <i>codec</i>, available from several vendors, which contains the analog components of the architecture.</li></ol> <p>AC'97 defines a high-quality, 16- or 24-<a href="/wiki/Bit" title="Bit">bit</a> audio architecture with <a href="/wiki/5.1_surround_sound" title="5.1 surround sound">5.1 surround sound</a> support for the PC. AC'97 supports a 96 kHz <a href="/wiki/Sampling_rate" class="mw-redirect" title="Sampling rate">sampling rate</a> at 24-bit stereo <a href="/wiki/Audio_bit_depth" title="Audio bit depth">resolution</a> and a 48 kHz sampling rate at 24-bit stereo resolution for multichannel recording and playback. </p><p>Integrated audio is implemented with the AC'97 Codec on the <a href="/wiki/Motherboard" title="Motherboard">motherboard</a>, a <a href="/wiki/Communications_and_networking_riser" title="Communications and networking riser">communications and networking riser</a> card, or an <a href="/wiki/Audio/modem_riser" title="Audio/modem riser">audio/modem riser</a> card. </p><p>The first shipping system was in the <a href="/wiki/Cyrix" title="Cyrix">Cyrix</a> <a href="/wiki/MediaGX" title="MediaGX">MediaGX</a>, in 1997. Intel started shipping the initial <a href="/wiki/I/O_Controller_Hub" title="I/O Controller Hub">I/O Controller Hub</a> support in 1999, and it wasn't until public shaming<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> in 2000, that most PC OEMs started shipping AC'97 audio as the default. </p><p>In 2004, Intel released <a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a> (HD Audio) which is a successor that is not <a href="/wiki/Backward_compatibility" title="Backward compatibility">backward compatible</a> with AC'97.<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> HD Audio has the capability to define up to 15 output channels, but in practice most motherboards provide no more than 8 channels (<a href="/wiki/7.1_surround_sound" title="7.1 surround sound">7.1 surround sound</a>). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Revisions">Revisions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=AC%2797&action=edit&section=1" title="Edit section: Revisions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444" /><table class="box-Missing_information plainlinks metadata ambox ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Wiki_letter_w.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/6/6c/Wiki_letter_w.svg/44px-Wiki_letter_w.svg.png" decoding="async" width="44" height="44" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/6/6c/Wiki_letter_w.svg/66px-Wiki_letter_w.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/6/6c/Wiki_letter_w.svg/88px-Wiki_letter_w.svg.png 2x" data-file-width="44" data-file-height="44" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>is missing information</b> about revision dates (which year).<span class="hide-when-compact"> Please expand the section to include this information. Further details may exist on the <a href="/wiki/Talk:AC%2797" title="Talk:AC'97">talk page</a>.</span> <span class="date-container"><i>(<span class="date">August 2022</span>)</i></span></div></td></tr></tbody></table> <p>AC'97 has had several revisions:<sup id="cite_ref-ac97_3-0" class="reference"><a href="#cite_note-ac97-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <ul><li>AC'97 1.x compliant indicates fixed 48 kHz sampling rate operation (non-extended feature set)</li> <li>AC'97 2.1 compliant indicates extended audio feature set (optional variable rate, multichannel, etc.)</li> <li>AC'97 2.2 compliant indicates extended audio, enhanced riser audio support, and optional <a href="/wiki/S/PDIF" title="S/PDIF">Sony/Philips Digital Interface Format</a></li> <li>AC'97 2.3 compliant indicates extended configuration information and optional <a href="/w/index.php?title=Jack_sensing&action=edit&redlink=1" class="new" title="Jack sensing (page does not exist)">jack sensing</a> support</li></ul> <p>AC'97 revision 2.3 enables <a href="/wiki/Plug_and_Play" class="mw-redirect" title="Plug and Play">Plug and Play</a> for the end user. This revision provides means for the audio codec to supply parametric data about its <a href="/wiki/Analog_device" title="Analog device">analog interface</a> much like <a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a>. </p> <div class="mw-heading mw-heading2"><h2 id="AC-Link">AC-Link</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=AC%2797&action=edit&section=2" title="Edit section: AC-Link"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The AC-Link is a digital link that connects the DC97 (the controller) with the audio "codecs." It is composed of five wires: the 12.288 MHz <var style="padding-right: 1px;">clock</var>, a 48 kHz <var style="padding-right: 1px;">sync</var> signal, a <var style="padding-right: 1px;">reset</var> signal, and two data wires which carry the actual audio data: <var style="padding-right: 1px;">sdata_out</var> and <var style="padding-right: 1px;">sdata_in</var>. The first four are outputs from the controller, while <var style="padding-right: 1px;">sdata_in</var> carries input from the codec. The link carries a bidirectional serial data stream at a fixed bitrate (12.288 Mbit/s) between the controller and one or more codecs. </p><p>Each 12.288 Mbit/s stream is divided into 256-bit frames (frame frequency is 48 kHz). This is therefore a <a href="/wiki/Time-division_multiplexing" title="Time-division multiplexing">time-division multiplexing</a> scheme. </p><p>Every frame is subdivided in 13 slots. The first (slot 0) is 16 bits long and contains validity flags for the remaining slots, while the remaining 240 bits are divided in twelve 20-bit slots (slots 1–12), used as data slots. </p><p>Slots 1, 2 and 12 are used for non-audio data, while slots 3–11 carry up to nine channels of raw <a href="/wiki/Pulse-code_modulation" title="Pulse-code modulation">pulse-code modulation</a> audio signals. Normally, six channels are used for 5.1 surround sound, and three channels are available for modem use. However, slots can be combined to provide a 96 kHz sampling rate for the L, R and C channels. </p><p>Lower sample rates (such as 44.1 kHz) are implemented using a <a href="/wiki/Handshake_(computing)" title="Handshake (computing)">handshake protocol</a> between the controller and codec which skips data during certain frames. (This capability depends on the codec. Alternatively, <a href="/wiki/Sample_rate_conversion" class="mw-redirect" title="Sample rate conversion">sample rate conversion</a> could be performed in the DC97 (controller) or in the software driver.) </p> <div class="mw-heading mw-heading2"><h2 id="Codec_chips">Codec chips</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=AC%2797&action=edit&section=3" title="Edit section: Codec chips"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Codec chips have an AC'97 interface on one side and analog audio interface on the other. They are usually small square chips with 48 pins (48-pin <a href="/wiki/Quad_Flat_Package" class="mw-redirect" title="Quad Flat Package">QFP</a> package). They are D/A and A/D or only D/A. </p> <ul><li><a href="/wiki/Analog_Devices" title="Analog Devices">Analog Devices</a> AD1819B, AD1881A, AD1885, AD1886, AD1887, AD1980, AD1981, AD1981A, AD1985. Since then, ADI have gotten out of the PC Audio business, either obsoleting or selling off devices to <a href="/wiki/Conexant" title="Conexant">Conexant</a>,<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> (which is now <a href="/wiki/Synaptics" title="Synaptics">Synaptics</a>).</li> <li><a href="/w/index.php?title=AKM_(Asahi_Kasei_Microsystems)&action=edit&redlink=1" class="new" title="AKM (Asahi Kasei Microsystems) (page does not exist)">AKM (Asahi Kasei Microsystems)</a> AK 4540, 4543, 4544A, 4545</li> <li><a href="/wiki/Avance_Logic" class="mw-redirect" title="Avance Logic">Avance Logic</a> (now <a href="/wiki/Realtek" title="Realtek">Realtek</a>) ALC201A, ALC202/A, ALC650, ALC655, ALC658, ALC101, ALC202A, ALC250, ALC850, ALC888</li> <li><a href="/wiki/Conexant" title="Conexant">Conexant</a> Cx20468 - with a modem,</li> <li><a href="/wiki/Cirrus_Logic" title="Cirrus Logic">Cirrus Logic</a> CrystalWare 4236, CrystalClear SoundFusion CS4297, CS4299</li> <li><a href="/wiki/Creative_Technology" title="Creative Technology">Creative Technology</a></li> <li><a href="/wiki/Crystal_Semiconductor" title="Crystal Semiconductor">Crystal Semiconductors</a> CS4205, CS4202</li> <li><a href="/wiki/C-Media" title="C-Media">C-Media</a> CMI9738, 9739, 9761, 9880</li> <li><a href="/wiki/ESS_Technology" title="ESS Technology">ESS</a> ES1988 (with a modem)</li> <li>Empia EMP202 (2 channel, 20-bit DAC and 20-bit ADC, full duplex AC'97 2.2 compatible stereo audio CODEC)</li> <li><a href="/wiki/Integrated_Device_Technology" title="Integrated Device Technology">Integrated Device Technology</a> (IDT)</li> <li><a href="/wiki/Intersil" title="Intersil">Intersil</a> HMP9701 (obsolete, 48 kHz fixed sample rate)</li> <li><a href="/wiki/National_Semiconductor" title="National Semiconductor">National Semiconductor</a> LM4550, LM49321, LM49350, LM49352</li> <li><a href="/wiki/Philips" title="Philips">Philips</a> UCB 1400 (with touchscreen controller)</li> <li><a href="/wiki/Realtek" title="Realtek">Realtek</a> ALC5610 ALC5611<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><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></li> <li><a href="/wiki/SigmaTel" title="SigmaTel">SigmaTel</a> (now <a href="/wiki/Integrated_Device_Technology" title="Integrated Device Technology">IDT</a>) C-Major STAC 9460 (D/A only), 9461, 9462, 9463, 9200, 9202, 9250, 9251, 9220, 9221, 9223, 9750</li> <li><a href="/wiki/Silicon_Labs" title="Silicon Labs">Silicon Labs</a> Si3036, Si3038, Si3046, Si3048 (modem only, two part chipset consists of Si3024 or Si3025 and Si3012 or Si3014)</li> <li><a href="/w/index.php?title=TriTech_Microelectronics&action=edit&redlink=1" class="new" title="TriTech Microelectronics (page does not exist)">TriTech Microelectronics</a> TR28022, 28026</li> <li><a href="/wiki/Yamaha_Corporation" title="Yamaha Corporation">Yamaha</a> YMF 743, 752, 753</li> <li><a href="/wiki/VIA_Technologies" title="VIA Technologies">VIA</a> VT1612, VT1616 (VIA Six-TRAC Vinyl Audio)</li> <li><a href="/wiki/Winbond" title="Winbond">Winbond</a> W83971</li> <li><a href="/wiki/Wolfson_Microelectronics" title="Wolfson Microelectronics">Wolfson Microelectronics</a> WM9701, WM9703, WM9704, WM9705 (w/touchscreen), WM9707, WM9708, WM9709 (DAC only), WM9711, WM9712 (w/touchscreen), WM9713 (w/touchscreen), WM9714</li></ul> <div class="mw-heading mw-heading2"><h2 id="Front_panel_connector">Front panel connector</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=AC%2797&action=edit&section=4" title="Edit section: Front panel connector"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Computer motherboards often provide a connector to bring microphone and headphone signals to the computer's front panel with <a href="/wiki/Sound_card#Color_codes" title="Sound card">standard color jack</a>. Intel provides a specification for that header; the signal assignments are different for AC'97 and <a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a> headers.<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> </p> <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">For a comparison of pin assignments, see <a href="/wiki/Intel_High_Definition_Audio#Front_panel_connector" title="Intel High Definition Audio">Intel High Definition Audio § Front panel connector</a>.</div> <div class="mw-heading mw-heading2"><h2 id="Operating_system_support">Operating system support</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=AC%2797&action=edit&section=5" title="Edit section: Operating system support"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>AC'97 is supported by most operating systems, such as Windows (starting with <a href="/wiki/Windows_95" title="Windows 95">Windows 95</a>) and Linux. Under DOS, applications access the sound hardware directly instead of through the operating system, and most DOS applications do not support AC'97. 64-bit versions of Windows 7 and later require a third-party driver for AC'97 support.<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> </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=AC%2797&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/40px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/60px-Commons-logo.svg.png 1.5x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:AC97" class="extiw" title="commons:Category:AC97">AC97</a></span>.</div></div> </div> <ul><li><a href="/wiki/Inter-IC_Sound" class="mw-redirect" title="Inter-IC Sound">Inter-IC Sound</a> (I²S)</li> <li><a href="/wiki/Audio/modem_riser" title="Audio/modem riser">Audio/modem riser</a> (AMR)</li> <li><a href="/wiki/Advanced_Communications_Riser" title="Advanced Communications Riser">Advanced Communications Riser</a> (ACR)</li> <li><a href="/wiki/Communications_and_networking_riser" title="Communications and networking riser">Communications and networking riser</a> (CNR)</li> <li><a href="/wiki/Mobile_daughter_card" title="Mobile daughter card">Mobile daughter card</a> (MDC)</li> <li><a href="/wiki/Sony/Philips_Digital_Interface" class="mw-redirect" title="Sony/Philips Digital Interface">Sony/Philips Digital Interface</a> (S/P-DIF)</li> <li><a href="/wiki/PC_System_Design_Guide" title="PC System Design Guide">PC System Design Guide</a></li> <li><a href="/wiki/Sound_card" title="Sound card">Sound card</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=AC%2797&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></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 id="CITEREFThomas2000" class="citation news cs1">Thomas, Andrew (September 7, 2000). <a rel="nofollow" class="external text" href="https://www.theregister.com/2000/09/07/intel_not_shipping_the_best/">"Intel not shipping the best drivers for its Easton mobo"</a>. <i>The Register</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Register&rft.atitle=Intel+not+shipping+the+best+drivers+for+its+Easton+mobo&rft.date=2000-09-07&rft.aulast=Thomas&rft.aufirst=Andrew&rft_id=https%3A%2F%2Fwww.theregister.com%2F2000%2F09%2F07%2Fintel_not_shipping_the_best%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" 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 class="citation cs2"><a rel="nofollow" class="external text" href="http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/high-definition-audio-specification.pdf">"1.2.1 AC'97 Compatibility"</a> <span class="cs1-format">(PDF)</span>, <i>High Definition Audio Specification</i>, Revision 1.0a, Intel Corporation, 2010, p. 17</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=1.2.1+AC%2797+Compatibility&rft.btitle=High+Definition+Audio+Specification&rft.series=Revision+1.0a&rft.pages=17&rft.pub=Intel+Corporation&rft.date=2010&rft_id=http%3A%2F%2Fwww.intel.com%2Fcontent%2Fdam%2Fwww%2Fpublic%2Fus%2Fen%2Fdocuments%2Fproduct-specifications%2Fhigh-definition-audio-specification.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" class="Z3988"></span></span> </li> <li id="cite_note-ac97-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-ac97_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090824055417/http://download.intel.com/support/motherboards/desktop/sb/ac97_r23.pdf"><i>Audio Codec '97</i></a> <span class="cs1-format">(PDF)</span>, Revision 2.3 Rev 1.0, Intel Corporation, April 2002, archived from the original on August 24, 2009<span class="reference-accessdate">, retrieved <span class="nowrap">December 22,</span> 2007</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Audio+Codec+%2797&rft.series=Revision+2.3+Rev+1.0&rft.pub=Intel+Corporation&rft.date=2002-04&rft_id=http%3A%2F%2Fdownload.intel.com%2Fsupport%2Fmotherboards%2Fdesktop%2Fsb%2Fac97_r23.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Citation" title="Template:Citation">citation</a>}}</code>: CS1 maint: bot: original URL status unknown (<a href="/wiki/Category:CS1_maint:_bot:_original_URL_status_unknown" title="Category:CS1 maint: bot: original URL status unknown">link</a>)</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFCyril2008" class="citation news cs1">Cyril, Kowaliski (December 15, 2008). <a rel="nofollow" class="external text" href="https://techreport.com/news/16065/analog-devices-passes-soundmax-torch-to-conexant/">"Analog Devices passes SoundMAX torch to Conexant"</a>. <i>Techreport</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Techreport&rft.atitle=Analog+Devices+passes+SoundMAX+torch+to+Conexant&rft.date=2008-12-15&rft.aulast=Cyril&rft.aufirst=Kowaliski&rft_id=https%3A%2F%2Ftechreport.com%2Fnews%2F16065%2Fanalog-devices-passes-soundmax-torch-to-conexant%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PNid=25&PFid=38&Level=4&Conn=3">AC'97 Interface</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120302112431/http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PNid=25&PFid=38&Level=4&Conn=3">Archived</a> March 2, 2012, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="ftp://58.211.24.153/pc/caudio/ALC5610_DataSheet_1.4.pdf">ALC5610 datasheet V1.4</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 October 2016">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></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"><a rel="nofollow" class="external text" href="ftp://207.232.93.28/pc/caudio/ALC5611_DataSheet_1.3.pdf">ALC5611 datasheet v1.3</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 October 2016">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></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 id="CITEREFIntel_Corporation2005" class="citation cs2">Intel Corporation (February 2005), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110511144045/http://www.formfactors.org/developer/specs/A2928604-005.pdf"><i>Front Panel I/O Connectivity Design Guide</i></a> <span class="cs1-format">(PDF)</span>, Version 1.3, pp. <span class="nowrap">19–</span>25, archived from <a rel="nofollow" class="external text" href="http://www.formfactors.org/developer/specs/A2928604-005.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2011-05-11<span class="reference-accessdate">, retrieved <span class="nowrap">2008-02-06</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Front+Panel+I%2FO+Connectivity+Design+Guide&rft.series=Version+1.3&rft.pages=%3Cspan+class%3D%22nowrap%22%3E19-%3C%2Fspan%3E25&rft.date=2005-02&rft.au=Intel+Corporation&rft_id=http%3A%2F%2Fwww.formfactors.org%2Fdeveloper%2Fspecs%2FA2928604-005.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" 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 class="citation cs2"><a rel="nofollow" class="external text" href="https://www.virtualbox.org/ticket/5332"><i>VirtualBox Bug #5332</i></a>, Oracle Corporation, 2009</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=VirtualBox+Bug+%235332&rft.pub=Oracle+Corporation&rft.date=2009&rft_id=https%3A%2F%2Fwww.virtualbox.org%2Fticket%2F5332&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAC%2797" class="Z3988"></span></span> </li> </ol></div> <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 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aria-labelledby="PC_sound_cards75" 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:PC_sound_standards" title="Template:PC sound standards"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:PC_sound_standards" title="Template talk:PC sound standards"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:PC_sound_standards" title="Special:EditPage/Template:PC sound standards"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="PC_sound_cards75" style="font-size:114%;margin:0 4em"><a href="/wiki/Sound_card" title="Sound card">PC sound cards</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">IBM compatible standards</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/Tandy_3-Voice" class="mw-redirect" title="Tandy 3-Voice">Tandy 3-Voice</a> (1983)</li> <li><a href="/wiki/MPU-401" title="MPU-401">MPU-401</a> (1984)</li> <li><a href="/wiki/IBM_Music_Feature_Card" title="IBM Music Feature Card">IBM Music Feature Card</a> (1987)</li> <li><a href="/wiki/AdLib" class="mw-redirect" title="AdLib">AdLib</a> (1987)</li> <li><a href="/wiki/Covox_Speech_Thing" title="Covox Speech Thing">Covox</a> (1987)</li> <li><a href="/wiki/Roland_MT-32" title="Roland MT-32">Roland MT-32</a> (1987)</li> <li><a href="/wiki/Roland_LAPC-I" title="Roland LAPC-I">Roland LAPC-I</a> (1989)</li> <li><a href="/wiki/Sound_Blaster" title="Sound Blaster">Sound Blaster</a> (1989)</li> <li><a href="/wiki/Innovation_SSI-2001" title="Innovation SSI-2001">SSI-2001</a> (1989)</li> <li><a href="/wiki/General_MIDI" title="General MIDI">General MIDI</a> (1991)</li> <li><a href="/wiki/Media_Vision_Pro_AudioSpectrum" title="Media Vision Pro AudioSpectrum">Pro AudioSpectrum</a> (1991)</li> <li><a href="/wiki/Roland_GS" title="Roland GS">Roland GS</a> (1991)</li> <li><a href="/wiki/Roland_Sound_Canvas" title="Roland Sound Canvas">Roland Sound Canvas</a> (1991)</li> <li><a href="/wiki/Roland_SC-55" title="Roland SC-55">Roland SC-55</a> (1991)</li> <li><a href="/wiki/TBC_Multisound" class="mw-redirect" title="TBC Multisound">TBC Multisound</a> (1991)</li> <li><a href="/wiki/Windows_Sound_System" title="Windows Sound System">Windows Sound System</a> (1992)</li> <li><a href="/wiki/Gravis_Ultrasound" class="mw-redirect" title="Gravis Ultrasound">Gravis Ultrasound</a> (1992)</li> <li><a href="/wiki/Ensoniq_Soundscape_S-2000" title="Ensoniq Soundscape S-2000">Ensoniq Soundscape S-2000</a> (1994)</li> <li><a href="/wiki/Yamaha_XG" title="Yamaha XG">Yamaha XG</a> (1994)</li> <li><a href="/wiki/Aztech_WaveRider" title="Aztech WaveRider">Aztech WaveRider</a> (1995)</li> <li><a href="/wiki/Aureal_Semiconductor_Vortex" class="mw-redirect" title="Aureal Semiconductor Vortex">Aureal Semiconductor Vortex</a> (1997)</li> <li><a class="mw-selflink selflink">AC'97</a> (1997)</li> <li><a href="/wiki/ESS_AudioDrive" class="mw-redirect" title="ESS AudioDrive">ESS AudioDrive</a> (1997)</li> <li><a href="/wiki/Ensoniq_AudioPCI" title="Ensoniq AudioPCI">Ensoniq AudioPCI</a> (1997)</li> <li><a href="/wiki/Sound_Blaster_Live!" title="Sound Blaster Live!">Sound Blaster Live!</a> (1998)</li> <li><a href="/wiki/TerraTec" title="TerraTec">Terratec Audiosystem EWS64</a> (1998)</li> <li><a href="/wiki/General_MIDI_Level_2" title="General MIDI Level 2">General MIDI Level 2</a> (1999)</li> <li><a href="/wiki/Environmental_Audio_Extensions" title="Environmental Audio Extensions">Environmental Audio Extensions</a> (2001)</li> <li><a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a> (2004)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other standards</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/Music_Macro_Language" title="Music Macro Language">MML</a> (1978)</li> <li><a href="/wiki/Yamaha_CX5M" title="Yamaha CX5M">SFG-01</a> (1983)</li> <li><a href="/wiki/Yamaha_CX5M" title="Yamaha CX5M">SFG-02</a> (1984)</li> <li><a href="/wiki/Tandy_Sound" class="mw-redirect" title="Tandy Sound">Tandy</a> (1984)</li> <li><a href="/wiki/Yamaha_Y8950" title="Yamaha Y8950">MSX-Audio</a> (1984)</li> <li><a href="/wiki/Yamaha_YM2413" title="Yamaha YM2413">MSX-Music</a> (1987)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</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/PC_speaker" title="PC speaker">PC speaker</a></li> <li><a href="/wiki/Creative_Wave_Blaster" title="Creative Wave Blaster">Wave Blaster</a></li> <li><a href="/wiki/MIDI" title="MIDI">MIDI</a></li> <li><a href="/wiki/Comparison_of_MIDI_standards" title="Comparison of MIDI standards">Comparison of MIDI standards</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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