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des d'aquesta adreça IP [y]" accesskey="y"><span>Contribucions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Discussi%C3%B3_personal" title="Discussió sobre les edicions per aquesta adreça ip. [n]" accesskey="n"><span>Discussió per aquest IP</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="Lloc"> <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="Contingut" 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">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</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">Inici</div> </a> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-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="Contingut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <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="Commuta la taula de continguts." > <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">Commuta la taula de continguts.</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">Freqüència de tall</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="Vés a un article en una altra llengua. Disponible en 21 llengües" > <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-21" 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">21 llengües</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/%D8%AA%D8%B1%D8%AF%D8%AF_%D8%A7%D9%84%D9%82%D8%B7%D8%B9" title="تردد القطع - àrab" lang="ar" hreflang="ar" data-title="تردد القطع" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Grenzfrequenz" title="Grenzfrequenz - alemany" lang="de" hreflang="de" data-title="Grenzfrequenz" data-language-autonym="Deutsch" data-language-local-name="alemany" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Cutoff_frequency" title="Cutoff frequency - anglès" lang="en" hreflang="en" data-title="Cutoff frequency" data-language-autonym="English" data-language-local-name="anglès" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Limfrekvenco" title="Limfrekvenco - esperanto" lang="eo" hreflang="eo" data-title="Limfrekvenco" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Frecuencia_de_corte" title="Frecuencia de corte - espanyol" lang="es" hreflang="es" data-title="Frecuencia de corte" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/L%C3%B5ikesagedus" title="Lõikesagedus - estonià" lang="et" hreflang="et" data-title="Lõikesagedus" data-language-autonym="Eesti" data-language-local-name="estonià" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%81%D8%B1%DA%A9%D8%A7%D9%86%D8%B3_%D9%82%D8%B7%D8%B9" title="فرکانس قطع - persa" lang="fa" hreflang="fa" data-title="فرکانس قطع" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Fr%C3%A9quence_de_coupure" title="Fréquence de coupure - francès" lang="fr" hreflang="fr" data-title="Fréquence de coupure" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Frequenza_di_taglio" title="Frequenza di taglio - italià" lang="it" hreflang="it" data-title="Frequenza di taglio" data-language-autonym="Italiano" data-language-local-name="italià" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%81%AE%E6%96%AD%E5%91%A8%E6%B3%A2%E6%95%B0" title="遮断周波数 - japonès" lang="ja" hreflang="ja" data-title="遮断周波数" data-language-autonym="日本語" data-language-local-name="japonès" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Kantelfrequentie" title="Kantelfrequentie - neerlandès" lang="nl" hreflang="nl" data-title="Kantelfrequentie" data-language-autonym="Nederlands" data-language-local-name="neerlandès" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Grensefrekvens" title="Grensefrekvens - noruec bokmål" lang="nb" hreflang="nb" data-title="Grensefrekvens" data-language-autonym="Norsk bokmål" data-language-local-name="noruec 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/Cz%C4%99stotliwo%C5%9B%C4%87_graniczna_filtru" title="Częstotliwość graniczna filtru - polonès" lang="pl" hreflang="pl" data-title="Częstotliwość graniczna filtru" data-language-autonym="Polski" data-language-local-name="polonès" 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/Frequ%C3%AAncia_de_corte" title="Frequência de corte - portuguès" lang="pt" hreflang="pt" data-title="Frequência de corte" data-language-autonym="Português" data-language-local-name="portuguès" 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/%D0%A7%D0%B0%D1%81%D1%82%D0%BE%D1%82%D0%B0_%D1%81%D1%80%D0%B5%D0%B7%D0%B0" title="Частота среза - rus" lang="ru" hreflang="ru" data-title="Частота среза" data-language-autonym="Русский" data-language-local-name="rus" 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/Cutoff_frequency" title="Cutoff frequency - Simple English" lang="en-simple" hreflang="en-simple" data-title="Cutoff frequency" 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-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Cutoff_frequency" title="Cutoff frequency - sondanès" lang="su" hreflang="su" data-title="Cutoff frequency" data-language-autonym="Sunda" data-language-local-name="sondanès" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Brytfrekvens" title="Brytfrekvens - suec" lang="sv" hreflang="sv" data-title="Brytfrekvens" data-language-autonym="Svenska" data-language-local-name="suec" 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/Kesme_frekans%C4%B1" title="Kesme frekansı - turc" lang="tr" hreflang="tr" data-title="Kesme frekansı" data-language-autonym="Türkçe" data-language-local-name="turc" 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/%D0%A7%D0%B0%D1%81%D1%82%D0%BE%D1%82%D0%B0_%D0%B7%D1%80%D1%96%D0%B7%D1%83" title="Частота зрізу - ucraïnès" lang="uk" hreflang="uk" data-title="Частота зрізу" data-language-autonym="Українська" data-language-local-name="ucraïnès" 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/%E6%88%AA%E6%AD%A2%E9%A0%BB%E7%8E%87" title="截止頻率 - xinès" lang="zh" hreflang="zh" data-title="截止頻率" data-language-autonym="中文" data-language-local-name="xinès" 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/Q1455881#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</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="Espais de noms"> <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/Freq%C3%BC%C3%A8ncia_de_tall" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:Freq%C3%BC%C3%A8ncia_de_tall&action=edit&redlink=1" rel="discussion" class="new" title="Discussió sobre el contingut d'aquesta pàgina (encara no existeix) [t]" accesskey="t"><span>Discussió</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="Canvia la variant de llengua" > <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">català</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="Vistes"> <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/Freq%C3%BC%C3%A8ncia_de_tall"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <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="Eines" > <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">Eines</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">Eines</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </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/Freq%C3%BC%C3%A8ncia_de_tall"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=history"><span>Mostra l'historial</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/Especial:Enlla%C3%A7os/Freq%C3%BC%C3%A8ncia_de_tall" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/Freq%C3%BC%C3%A8ncia_de_tall" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A0gines_especials" title="Llista totes les pàgines especials [q]" accesskey="q"><span>Pàgines especials</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&oldid=34104979" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=info" title="Més informació sobre aquesta pàgina"><span>Informació de la pàgina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citau&page=Freq%C3%BC%C3%A8ncia_de_tall&id=34104979&wpFormIdentifier=titleform" title="Informació sobre com citar aquesta pàgina"><span>Citau aquest article</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FFreq%25C3%25BC%25C3%25A8ncia_de_tall"><span>Obtén una URL abreujada</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FFreq%25C3%25BC%25C3%25A8ncia_de_tall"><span>Descarrega el codi QR</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"> Imprimeix/exporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Llibre&bookcmd=book_creator&referer=Freq%C3%BC%C3%A8ncia+de+tall"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Freq%C3%BC%C3%A8ncia_de_tall&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</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"> En altres projectes </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/Q1455881" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</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="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <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">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</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">De la Viquipèdia, l'enciclopèdia lliure</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="ca" dir="ltr"><figure typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Butterworth_response.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Butterworth_response.svg/396px-Butterworth_response.svg.png" decoding="async" width="396" height="297" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Butterworth_response.svg/594px-Butterworth_response.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/60/Butterworth_response.svg/792px-Butterworth_response.svg.png 2x" data-file-width="512" data-file-height="384" /></a><figcaption>Un diagrama de <a href="/wiki/Diagrama_de_Bode" title="Diagrama de Bode">Bode</a> de la <a href="/wiki/Resposta_en_freq%C3%BC%C3%A8ncia" title="Resposta en freqüència">resposta de freqüència</a> del <a href="/wiki/Filtre_de_Butterworth" title="Filtre de Butterworth">filtre de Butterworth</a>, amb la freqüència de tall etiquetada.</figcaption></figure> <p>En <a href="/wiki/F%C3%ADsica" title="Física">física</a> i <a href="/wiki/Electrot%C3%A8cnia" title="Electrotècnia">enginyeria elèctrica</a>, una <b>freqüència de tall,</b> una freqüència de cantonada o una freqüència de ruptura és un límit en la <a href="/wiki/Resposta_en_freq%C3%BC%C3%A8ncia" title="Resposta en freqüència">resposta de freqüència</a> d'un sistema en què l'energia que flueix a través del sistema comença a reduir-se (<a href="/wiki/Atenuaci%C3%B3_(mec%C3%A0nica_d%27ones)" title="Atenuació (mecànica d'ones)">atenuar</a> o reflectir) en lloc de passar.<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> </p> <figure typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Bandwidth.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/367px-Bandwidth.svg.png" decoding="async" width="367" height="258" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/551px-Bandwidth.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/734px-Bandwidth.svg.png 2x" data-file-width="542" data-file-height="381" /></a><figcaption>Funció de transferència de magnitud d'un <a href="/wiki/Filtre_passabanda" title="Filtre passabanda">filtre passabanda</a> amb freqüència de tall inferior <i>f</i><sub>1</sub> de 3 dB i freqüència de tall <sub>.</sub>superior <i>f</i>₂ de 3 dB.</figcaption></figure> <p>Normalment, en sistemes electrònics, com ara <a href="/wiki/Filtre_(processament_del_senyal)" title="Filtre (processament del senyal)">filtres</a> i <a href="/w/index.php?title=Canal_(comunicaci%C3%B3)&action=edit&redlink=1" class="new" title="Canal (comunicació) (encara no existeix)">canals de comunicació</a>, la freqüència de tall s'aplica a una vora en una característica de <a href="/wiki/Filtre_passabaix" title="Filtre passabaix">pas baix</a>, <a href="/wiki/Filtre_passaalt" title="Filtre passaalt">pas</a> -alt, passa- <a href="/wiki/Filtre_passabanda" title="Filtre passabanda">banda</a> o <a href="/wiki/Filtre_de_banda_eliminada" title="Filtre de banda eliminada">parada de banda</a>: una freqüència que caracteritza un límit entre una banda de <a href="/wiki/Banda_passant" class="mw-redirect" title="Banda passant">pas</a> i una banda de <a href="/w/index.php?title=Banda_de_parada&action=edit&redlink=1" class="new" title="Banda de parada (encara no existeix)">parada</a>. De vegades es considera el punt de la resposta del filtre on una banda de <a href="/w/index.php?title=Banda_de_transici%C3%B3&action=edit&redlink=1" class="new" title="Banda de transició (encara no existeix)">transició i una banda</a> de pas es troben, per exemple, tal com es defineix per un <a href="/w/index.php?title=Punt_de_mitja_pot%C3%A8ncia&action=edit&redlink=1" class="new" title="Punt de mitja potència (encara no existeix)">punt de mitja potència</a> (una freqüència per a la qual la sortida del circuit és -3 <a href="/wiki/Decibel" title="Decibel">dB</a> del valor nominal de la banda de pas). Alternativament, es pot especificar una freqüència de cantonada de banda de parada com un punt on es troben una banda de transició i una banda de parada: una freqüència per a la qual l'atenuació és més gran que l'atenuació de la banda de parada requerida, que per exemple pot ser de 30 dB o 100 dB.<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> </p><p>En el cas d'una guia d'<a href="/wiki/Guia_d%27ones_(electromagnetisme)" title="Guia d'ones (electromagnetisme)">ona</a> o d'una <a href="/wiki/Antena_(r%C3%A0dio)" title="Antena (ràdio)">antena</a>, les freqüències de tall corresponen a les longituds d'ona de tall inferior i superior.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>En <a href="/wiki/Electr%C3%B2nica" title="Electrònica">electrònica</a>, la freqüència de tall o la freqüència de cantonada és la <a href="/wiki/Freq%C3%BC%C3%A8ncia" title="Freqüència">freqüència</a> per sobre o per sota de la qual la potència de sortida d'un <a href="/wiki/Circuit_electr%C3%B2nic" class="mw-redirect" title="Circuit electrònic">circuit</a>, com ara una <a href="/wiki/L%C3%ADnia_telef%C3%B2nica" title="Línia telefònica">línia</a>, un amplificador o <a href="/wiki/Filtre_electr%C3%B2nic" title="Filtre electrònic">un filtre electrònic</a>, ha caigut a una proporció determinada de la potència de la banda de <a href="/wiki/Banda_passant" class="mw-redirect" title="Banda passant">pas</a>. Amb més freqüència, aquesta proporció és la meitat de la potència de la banda de pas, també anomenada 3 Punt <a href="/wiki/Decibel" title="Decibel">dB</a> des d'una caiguda de 3 dB correspon aproximadament a la meitat de la potència. Com a relació de voltatge, això és una caiguda a <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\textstyle {\sqrt {1/2}}\ \approx \ 0.707}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>1</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>2</mn> </msqrt> </mrow> <mtext> </mtext> <mo>≈</mo> <mtext> </mtext> <mn>0.707</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\textstyle {\sqrt {1/2}}\ \approx \ 0.707}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b23ae6c649ff4d26d367d8212a8dd45fd89a8067" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:15.368ex; height:3.343ex;" alt="{\textstyle {\sqrt {1/2}}\ \approx \ 0.707}"></span> de la tensió de la banda passada.<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> Altres ràtios a part del 3 El punt dB també pot ser rellevant, per exemple, vegeu <a href="#Notes">Freqüència de tall § Notes</a> continuació. Lluny de la freqüència de tall a la banda de transició, la taxa d'augment de l'atenuació (<a href="/w/index.php?title=Roll-off&action=edit&redlink=1" class="new" title="Roll-off (encara no existeix)">roll-off</a>) amb logaritme de freqüència és <a href="/wiki/As%C3%ADmptota" title="Asímptota">asimptòtica</a> a una constant. Per a una xarxa <a href="/wiki/Equaci%C3%B3_diferencial_lineal" title="Equació diferencial lineal">de primer ordre</a>, el descens és -20 dB per <a href="/w/index.php?title=D%C3%A8cada_(escala_logar%C3%ADtmica)&action=edit&redlink=1" class="new" title="Dècada (escala logarítmica) (encara no existeix)">dècada</a> (−6 dB per <a href="/wiki/Octava_(m%C3%BAsica)" title="Octava (música)">octava</a>). </p><p><br /> </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Freq%C3%BC%C3%A8ncia_de_tall&action=edit&section=1" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.electrical4u.com/cutoff-frequency/">Cutoff Frequency: What is it? Formula And How To Find it | Electrical4U</a>» (en anglès).  <a rel="nofollow" class="external free" href="https://www.electrical4u.com.+">https://www.electrical4u.com.+</a>[Consulta: 7 novembre 2022].</span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.omnicalculator.com/physics/cutoff-frequency">Cutoff Frequency Calculator</a>» (en anglès).  <a rel="nofollow" class="external free" href="https://www.omnicalculator.com.+">https://www.omnicalculator.com.+</a>[Consulta: 7 novembre 2022].</span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.everythingrf.com/community/what-is-cut-off-frequency-in-an-rf-filter">What is Cut-off Frequency in an RF Filter?</a>» (en anglès).  <a rel="nofollow" class="external free" href="https://www.everythingrf.com.+">https://www.everythingrf.com.+</a>[Consulta: 7 novembre 2022].</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal"><span style="font-variant: small-caps;">Van Valkenburg</span>, M. E.. <a rel="nofollow" class="external text" href="https://archive.org/details/networkanalysis00vanv/page/383"><i>Network Analysis</i></a> (en anglès). 3rd, p. <a rel="nofollow" class="external text" href="https://archive.org/details/networkanalysis00vanv/page/383">383–384</a>. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/0-13-611095-9" title="Especial:Fonts bibliogràfiques/0-13-611095-9">ISBN 0-13-611095-9</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Network+Analysis&rft.aulast=Van+Valkenburg&rft.aufirst=M.+E.&rft.edition=3rd&rft.pages=%5Bhttps%3A%2F%2Farchive.org%2Fdetails%2Fnetworkanalysis00vanv%2Fpage%2F383+383%E2%80%93384%5D&rft.isbn=0-13-611095-9&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fnetworkanalysis00vanv%2Fpage%2F383"><span style="display: none;"> </span></span></span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtingut de «<a dir="ltr" href="https://ca.wikipedia.org/w/index.php?title=Freqüència_de_tall&oldid=34104979">https://ca.wikipedia.org/w/index.php?title=Freqüència_de_tall&oldid=34104979</a>»</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categoria</a>: <ul><li><a href="/wiki/Categoria:Electr%C3%B2nica" title="Categoria:Electrònica">Electrònica</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"> La pàgina va ser modificada per darrera vegada el 11 oct 2024 a les 18:15.</li> <li id="footer-info-copyright">El text està disponible sota la <a href="/wiki/Viquip%C3%A8dia:Text_de_la_llic%C3%A8ncia_de_Creative_Commons_Reconeixement-Compartir_Igual_4.0_No_adaptada" title="Viquipèdia:Text de la llicència de Creative Commons Reconeixement-Compartir Igual 4.0 No adaptada"> Llicència de Creative Commons Reconeixement i Compartir-Igual</a>; es poden aplicar termes addicionals. 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