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Dominio della frequenza - Wikipedia
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class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" 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="Mostra/Nascondi l'indice" > <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">Mostra/Nascondi l'indice</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">Dominio della frequenza</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="Vai a una voce in un'altra lingua. Disponibile in 21 lingue" > <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 lingue</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%85%D8%AC%D8%A7%D9%84_%D8%A7%D9%84%D8%AA%D8%B1%D8%AF%D8%AF" title="مجال التردد - arabo" lang="ar" hreflang="ar" data-title="مجال التردد" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Domini_freq%C3%BCencial" title="Domini freqüencial - catalano" lang="ca" hreflang="ca" data-title="Domini freqüencial" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/Frequenzraum" title="Frequenzraum - tedesco" lang="de" hreflang="de" data-title="Frequenzraum" data-language-autonym="Deutsch" data-language-local-name="tedesco" 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/Frequency_domain" title="Frequency domain - inglese" lang="en" hreflang="en" data-title="Frequency domain" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Dominio_de_la_frecuencia" title="Dominio de la frecuencia - spagnolo" lang="es" hreflang="es" data-title="Dominio de la frecuencia" data-language-autonym="Español" data-language-local-name="spagnolo" 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/Sagedusruum" title="Sagedusruum - estone" lang="et" hreflang="et" data-title="Sagedusruum" data-language-autonym="Eesti" data-language-local-name="estone" 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/%D8%AD%D9%88%D8%B2%D9%87_%D9%81%D8%B1%DA%A9%D8%A7%D9%86%D8%B3" title="حوزه فرکانس - persiano" lang="fa" hreflang="fa" data-title="حوزه فرکانس" data-language-autonym="فارسی" data-language-local-name="persiano" 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/Domaine_fr%C3%A9quentiel" title="Domaine fréquentiel - francese" lang="fr" hreflang="fr" data-title="Domaine fréquentiel" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%91%A8%E6%B3%A2%E6%95%B0%E9%A0%98%E5%9F%9F" title="周波数領域 - giapponese" lang="ja" hreflang="ja" data-title="周波数領域" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A3%BC%ED%8C%8C%EC%88%98_%EC%98%81%EC%97%AD" title="주파수 영역 - coreano" lang="ko" hreflang="ko" data-title="주파수 영역" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Frequentiedomein" title="Frequentiedomein - olandese" lang="nl" hreflang="nl" data-title="Frequentiedomein" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Frekvensplanet" title="Frekvensplanet - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Frekvensplanet" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Dom%C3%ADnio_da_frequ%C3%AAncia" title="Domínio da frequência - portoghese" lang="pt" hreflang="pt" data-title="Domínio da frequência" data-language-autonym="Português" data-language-local-name="portoghese" 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%BD%D1%8B%D0%B9_%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%B2%D0%B0%D0%BB" title="Частотный интервал - russo" lang="ru" hreflang="ru" data-title="Частотный интервал" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Rrafshi_i_frekuenc%C3%ABs" title="Rrafshi i frekuencës - albanese" lang="sq" hreflang="sq" data-title="Rrafshi i frekuencës" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Pita_fr%C3%A9ku%C3%A9nsi" title="Pita frékuénsi - sundanese" lang="su" hreflang="su" data-title="Pita frékuénsi" data-language-autonym="Sunda" data-language-local-name="sundanese" 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/Frekvensdom%C3%A4n" title="Frekvensdomän - svedese" lang="sv" hreflang="sv" data-title="Frekvensdomän" data-language-autonym="Svenska" data-language-local-name="svedese" 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/Frekans_uzay%C4%B1" title="Frekans uzayı - turco" lang="tr" hreflang="tr" data-title="Frekans uzayı" data-language-autonym="Türkçe" data-language-local-name="turco" 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%BD%D0%B0_%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C" title="Частотна область - ucraino" lang="uk" hreflang="uk" data-title="Частотна область" data-language-autonym="Українська" data-language-local-name="ucraino" 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/%E9%A0%BB%E5%9F%9F" title="頻域 - cinese" lang="zh" hreflang="zh" data-title="頻域" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%A0%BB%E5%9F%9F" title="頻域 - cantonese" lang="yue" hreflang="yue" data-title="頻域" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet 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lang="it" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r133964453">.mw-parser-output .avviso .mbox-text-div>div,.mw-parser-output .avviso .mbox-text-full-div>div{font-size:90%}.mw-parser-output .avviso .mbox-image{flex-basis:52px;flex-grow:0;flex-shrink:0}.mw-parser-output .avviso .mbox-text-full-div .hide-when-compact{display:block}</style><div style="" class="ambox metadata noprint plainlinks avviso avviso-generico"> <div class="avviso-immagine mbox-image noprint"><span typeof="mw:File"><a href="/wiki/File:Nuvola_apps_katomic.svg" class="mw-file-description" title="Abbozzo fisica"><img alt="Abbozzo fisica" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Nuvola_apps_katomic.svg/45px-Nuvola_apps_katomic.svg.png" decoding="async" width="45" height="45" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Nuvola_apps_katomic.svg/68px-Nuvola_apps_katomic.svg.png 1.5x, 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Segui i suggerimenti del <a href="/wiki/Progetto:Fisica" title="Progetto:Fisica">progetto di riferimento</a>.</div> <div class="hide-when-compact"> </div> </div> </div> </div> <p>In <a href="/wiki/Matematica" title="Matematica">matematica</a>, <a href="/wiki/Ingegneria" title="Ingegneria">ingegneria</a>, <a href="/wiki/Fisica" title="Fisica">fisica</a>, <a href="/wiki/Statistica" title="Statistica">statistica</a>, e altri ambiti delle scienze, l'analisi nel <b>dominio della frequenza</b> di una <a href="/wiki/Funzione_(matematica)" title="Funzione (matematica)">funzione</a> <a href="/wiki/Dominio_del_tempo" title="Dominio del tempo">del tempo</a> (o <a href="/wiki/Teoria_dei_segnali" title="Teoria dei segnali">segnale</a>) ne indica la descrizione in termini dell'insieme (<a href="/wiki/Rappresentazione_spettrale_dei_segnali" title="Rappresentazione spettrale dei segnali">spettro</a>) delle sue <a href="/wiki/Frequenza" title="Frequenza">frequenze</a>. Ad esempio, è una pratica diffusa nell'ambito delle tecnologie audiovisive e nelle telecomunicazioni valutare quanto un segnale elettrico o <a href="/wiki/Radiazione_elettromagnetica" title="Radiazione elettromagnetica">elettromagnetico</a> sia compreso in bande di frequenze di particolare interesse. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Descrizione">Descrizione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=1" title="Modifica la sezione Descrizione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=1" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In tale formalismo un segnale è visto come una sovrapposizione di sinusoidi complesse, ognuna rappresentante una certa <a href="/wiki/Frequenza" title="Frequenza">frequenza</a> e <a href="/wiki/Fase_(segnali)" class="mw-redirect" title="Fase (segnali)">fase</a>. Conoscendo l'ampiezza e la fase di ogni frequenza costitutiva di un segnale è in linea di principio possibile "ricostruire" il segnale di partenza in un certo intervallo di tempo. In molte applicazioni pratiche, tuttavia, l'informazione sulla fase viene trascurata e la rappresentazione in termini di frequenze pure è detta <a href="/wiki/Spettro_di_potenza" title="Spettro di potenza">spettro</a> del segnale. </p><p>Il concetto di dominio della frequenza è stato inizialmente reso possibile dall'introduzione della <a href="/wiki/Serie_di_Fourier" title="Serie di Fourier">serie di Fourier</a> da parte del <a href="/wiki/Matematico" title="Matematico">matematico</a> francese <a href="/wiki/Joseph_Fourier" class="mw-redirect" title="Joseph Fourier">Joseph Fourier</a>, che ha dato inizio ad un settore della matematica noto come <a href="/wiki/Analisi_di_Fourier" title="Analisi di Fourier">analisi di Fourier</a>. La rappresentazione in serie di Fourier, che si utilizza per segnali periodici, viene estesa a segnali generici (con opportune limitazioni matematiche) da diverse <a href="/wiki/Trasformata_integrale" title="Trasformata integrale">trasformate integrali</a>, in particolar modo la <a href="/wiki/Trasformata_di_Fourier" title="Trasformata di Fourier">trasformata di Fourier</a> e la <a href="/wiki/Trasformata_di_Laplace" title="Trasformata di Laplace">trasformata di Laplace</a>, sebbene il dominio di quest'ultima trasformata non sia strettamente frequenziale. </p> <div class="mw-heading mw-heading3"><h3 id="Dominio_di_Laplace">Dominio di Laplace</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=2" title="Modifica la sezione Dominio di Laplace" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=2" title="Edit section's source code: Dominio di Laplace"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Time_and_frequency_domains.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/23/Time_and_frequency_domains.svg/220px-Time_and_frequency_domains.svg.png" decoding="async" width="220" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/23/Time_and_frequency_domains.svg/330px-Time_and_frequency_domains.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/23/Time_and_frequency_domains.svg/440px-Time_and_frequency_domains.svg.png 2x" data-file-width="870" data-file-height="617" /></a><figcaption>Rappresentazione nel dominio del tempo e della frequenza</figcaption></figure> <p>La trasformata di Laplace trasforma una funzione che ha per variabile indipendente il tempo (o comunque un <a href="/wiki/Numero_reale" title="Numero reale">numero reale</a>) in una funzione che ha per variabile indipendente un <a href="/wiki/Numero_complesso" title="Numero complesso">numero complesso</a>, la cui <a href="/wiki/Parte_reale" title="Parte reale">parte reale</a> dipende dall'<a href="/wiki/Inviluppo" class="mw-disambig" title="Inviluppo">inviluppo</a> della funzione di partenza, mentre la <a href="/wiki/Parte_immaginaria" title="Parte immaginaria">parte immaginaria</a> rappresenta le <a href="/wiki/Pulsazione" class="mw-disambig" title="Pulsazione">pulsazioni</a>, per cui, se si annulla la parte reale, la trasformata di Laplace viene a coincidere con quella di Fourier ed il suo dominio diventa a tutti gli effetti frequenziale </p> <div class="mw-heading mw-heading3"><h3 id="Altri_domini_correlati">Altri domini correlati</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=3" title="Modifica la sezione Altri domini correlati" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=3" title="Edit section's source code: Altri domini correlati"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Vi sono inoltre la <a href="/wiki/Trasformata_zeta" title="Trasformata zeta">trasformata zeta</a> (per <a href="/wiki/Segnale_discreto" title="Segnale discreto">segnali discreti</a>, usata soprattutto nell'<a href="/wiki/Elaborazione_numerica_dei_segnali" title="Elaborazione numerica dei segnali">elaborazione numerica dei segnali</a>), la <a href="/wiki/Wavelet" title="Wavelet">trasformata wavelet</a> (<a href="/wiki/Elaborazione_digitale_delle_immagini" title="Elaborazione digitale delle immagini">elaborazione digitale delle immagini</a>, <a href="/wiki/Compressione_dei_dati" title="Compressione dei dati">compressione dei segnali</a>) o la <a href="/wiki/Trasformata_di_Mellin" title="Trasformata di Mellin">trasformata di Mellin</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Applicazioni">Applicazioni</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=4" title="Modifica la sezione Applicazioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=4" title="Edit section's source code: Applicazioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Questi strumenti di analisi sono utilizzati nello studio dei <a href="/wiki/Circuiti_elettronici" class="mw-redirect" title="Circuiti elettronici">circuiti elettronici</a> e dei <a href="/wiki/Sistemi_di_controllo" class="mw-redirect" title="Sistemi di controllo">sistemi di controllo</a>. </p><p>La trattazione matematica della scomposizione in frequenza di una funzione viene affrontata in generale dall'<a href="/wiki/Analisi_armonica" title="Analisi armonica">analisi armonica</a>, ed ha una vasta diffusione nelle scienze applicate. </p><p>Per visualizzare i segnali nel dominio della frequenza si usa uno strumento chiamato <a href="/wiki/Analizzatore_di_spettro" title="Analizzatore di spettro">analizzatore di spettro</a>, mentre nel dominio del tempo si usa l'<a href="/wiki/Oscilloscopio" title="Oscilloscopio">oscilloscopio</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=5" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=5" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <cite class="citation libro" style="font-style:normal"> S.A. Broughton e K. Bryan, <span style="font-style:italic;">Discrete Fourier Analysis and Wavelets: Applications to Signal and Image Processing</span>, New York, <a href="/wiki/John_Wiley_%26_Sons" title="John Wiley & Sons">Wiley</a>, 2008, p. 72.</cite></li> <li>(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <cite class="citation pubblicazione" style="font-style:normal"> B. Boashash, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1109/29.90380"><span style="font-style:italic;">Note on the Use of the Wigner Distribution for Time Frequency Signal Analysis</span></a>, in <span style="font-style:italic;">IEEE Transactions on Acoustics, Speech, and Signal Processing</span>, vol. 36, n. 9, Sep 1988, pp. 1518–1521, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1109%2F29.90380">10.1109/29.90380</a>.</cite>.</li> <li>(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <cite class="citation pubblicazione" style="font-style:normal"> B. Boashash, <a rel="nofollow" class="external text" href="https://oadoi.org/10.1109/5.135376"><span style="font-style:italic;">Estimating and Interpreting the Instantaneous Frequency of a Signal-Part I: Fundamentals</span></a>, in <span style="font-style:italic;">Proceedings of the IEEE</span>, vol. 80, n. 4, aprile 1992, pp. 519–538, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1109%2F5.135376">10.1109/5.135376</a>.</cite>.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=6" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=6" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Analisi_armonica" title="Analisi armonica">Analisi armonica</a></li> <li><a href="/wiki/Analisi_di_Fourier" title="Analisi di Fourier">Analisi di Fourier</a></li> <li><a href="/wiki/Dominio_del_tempo" title="Dominio del tempo">Dominio del tempo</a></li> <li><a href="/wiki/Rappresentazione_spettrale_dei_segnali" title="Rappresentazione spettrale dei segnali">Rappresentazione spettrale dei segnali</a></li> <li><a href="/wiki/Serie_di_Fourier" title="Serie di Fourier">Serie di Fourier</a></li> <li><a href="/wiki/Spettro_di_potenza" title="Spettro di potenza">Spettro di potenza</a></li> <li><a href="/wiki/Trasformata_di_Fourier" title="Trasformata di Fourier">Trasformata di Fourier</a></li> <li><a href="/wiki/Trasformata_di_Laplace" title="Trasformata di Laplace">Trasformata di Laplace</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dominio_della_frequenza&veaction=edit&section=7" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Dominio_della_frequenza&action=edit&section=7" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Signal processing"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Signal_processing?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file sul <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Signal_processing?uselang=it">Dominio della frequenza</a></span></b></li></ul> <div class="noprint" style="width:100%; 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