{"id":16805,"date":"2020-06-04T12:07:09","date_gmt":"2020-06-04T10:07:09","guid":{"rendered":"https:\/\/www.preform.de\/?page_id=16805"},"modified":"2020-06-04T16:18:49","modified_gmt":"2020-06-04T14:18:49","slug":"octaves-et-tierces","status":"publish","type":"page","link":"https:\/\/www.preform.de\/fr\/octaves-et-tierces\/","title":{"rendered":"Octaves et tierces"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"16805\" class=\"elementor elementor-16805\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-627f504 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"627f504\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-67497a2\" data-id=\"67497a2\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-be0fb17 elementor-widget elementor-widget-global elementor-global-4576 elementor-widget-breadcrumbs\" data-id=\"be0fb17\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/www.preform.de\/fr\/\">Start<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-afa080f elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"afa080f\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;,&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-d68c6c7\" data-id=\"d68c6c7\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a900b35 elementor-widget elementor-widget-global elementor-global-4223 elementor-widget-spacer\" data-id=\"a900b35\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"#presse\" 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data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Octaves et tierces<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c25572 elementor-widget elementor-widget-text-editor\" data-id=\"9c25572\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Comme en musique, les octaves sont utilis\u00e9es pour diviser la plage d&#8217;\u00e9coute en intervalles de fr\u00e9quence. Une octave (du latin octava : &#8220;la huiti\u00e8me&#8221;) est un intervalle o\u00f9 la fr\u00e9quence du ton inf\u00e9rieur est dans un rapport de 1:2 (doublant la fr\u00e9quence pr\u00e9c\u00e9dente) \u00e0 celle du ton sup\u00e9rieur. Les param\u00e8tres acoustiques en particulier, comme le coefficient d&#8217;absorption acoustique ou le niveau de pression acoustique, sont g\u00e9n\u00e9ralement donn\u00e9s par incr\u00e9ments d&#8217;octaves et de tiers.<\/p><p>Les tiers d&#8217;octave, c&#8217;est-\u00e0-dire 1\/3 d&#8217;octave, sont g\u00e9n\u00e9ralement utilis\u00e9s comme intervalles de fr\u00e9quence plus petits (rapport de fr\u00e9quence 1:1,28). Les instruments de mesure utilis\u00e9s pour l&#8217;analyse des fr\u00e9quences contiennent g\u00e9n\u00e9ralement des filtres d&#8217;octave et d&#8217;un tiers d&#8217;octave qui permettent d&#8217;enregistrer le processus sonore dans ses plages individuelles d&#8217;octave ou d&#8217;un tiers d&#8217;octave et de l&#8217;afficher sous forme de spectre sonore. La gamme compl\u00e8te de l&#8217;audition humaine couvre 10 \u00e0 11 octaves.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f2a047a elementor-widget elementor-widget-global elementor-global-4223 elementor-widget-spacer\" data-id=\"f2a047a\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"#presse\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-db8b76a elementor-hidden-tablet elementor-hidden-phone\" data-id=\"db8b76a\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-db7347e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"db7347e\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-72940e3\" data-id=\"72940e3\" data-element_type=\"column\" data-e-type=\"column\" 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data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f7a3d29 elementor-section-content-middle animated-fast elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"f7a3d29\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-dded68a\" data-id=\"dded68a\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-70dcb6b elementor-align-left elementor-widget__width-inherit elementor-tablet-align-left elementor-mobile-align-justify ha-has-bg-overlay elementor-widget elementor-widget-button\" data-id=\"70dcb6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/www.preform.de\/fr\/glossaire-acoustique\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Retour au glossaire<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9711ae7\" data-id=\"9711ae7\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30437fb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"30437fb\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-96d1b4c\" data-id=\"96d1b4c\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-858e806 elementor-widget elementor-widget-global elementor-global-4223 elementor-widget-spacer\" data-id=\"858e806\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"#presse\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1d25ab0 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1d25ab0\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;,&quot;architecturer_ext_is_background_parallax&quot;:&quot;false&quot;,&quot;architecturer_ext_is_background_on_scroll&quot;:&quot;false&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-e2ea997\" data-id=\"e2ea997\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c69f307 elementor-widget elementor-widget-global elementor-global-4223 elementor-widget-spacer\" data-id=\"c69f307\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"#presse\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c70229c elementor-widget elementor-widget-text-editor\" data-id=\"c70229c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;architecturer_ext_is_mobile_menu&quot;:&quot;false&quot;,&quot;architecturer_ext_is_scrollme&quot;:&quot;false&quot;,&quot;architecturer_ext_is_smoove&quot;:&quot;false&quot;,&quot;architecturer_ext_is_parallax_mouse&quot;:&quot;false&quot;,&quot;architecturer_ext_is_infinite&quot;:&quot;false&quot;,&quot;architecturer_ext_is_fadeout_animation&quot;:&quot;false&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4 data-gramm=\"false\"><strong>Souhaitez-vous recevoir un devis personnalis\u00e9 ou de plus amples informations ?<br \/>Contactez-nous d\u00e8s maintenant.<\/strong><\/h4><h4 data-gramm=\"false\"><strong>\u00a0<\/strong><\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-d4d921a elementor-hidden-tablet elementor-hidden-phone\" data-id=\"d4d921a\" 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Une octave (du latin octava : &#8220;la huiti\u00e8me&#8221;) est un intervalle o\u00f9 la fr\u00e9quence du ton inf\u00e9rieur est dans un rapport [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":10592,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-16805","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Explications sur les octaves et tierces | PREFORM<\/title>\n<meta name=\"description\" content=\"Comme en musique, les octaves et tierces sont utilis\u00e9es pour diviser la plage d&#039;\u00e9coute en intervalles de fr\u00e9quence.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.preform.de\/fr\/octaves-et-tierces\/\" \/>\n<meta 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