{"id":16661,"date":"2020-06-04T10:24:18","date_gmt":"2020-06-04T08:24:18","guid":{"rendered":"https:\/\/www.preform.de\/?page_id=16661"},"modified":"2020-06-30T09:06:51","modified_gmt":"2020-06-30T07:06:51","slug":"classe-d-absorption","status":"publish","type":"page","link":"https:\/\/www.preform.de\/fr\/classes-d-absorption\/","title":{"rendered":"Classes d&#8217;absorption acoustique\/coefficient d&#8217;absorption acoustique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"16661\" class=\"elementor elementor-16661\" 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\" 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elementor-widget elementor-widget-global elementor-global-4576 elementor-widget-breadcrumbs\" data-id=\"be0fb17\" data-element_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-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\" 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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\">Classes d'absorption\/coefficient d'absorption acoustique<\/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-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>Le coefficient d&#8217;absorption acoustique \u03b1 indique la taille de la partie absorb\u00e9e du son total. <br \/>\u03b1 = 0 signifie qu&#8217;il n&#8217;y a pas d&#8217;absorption, tout le son est r\u00e9fl\u00e9chi. Pour \u03b1 = 0,5, 50% de l&#8217;\u00e9nergie sonore est absorb\u00e9e et 50% est r\u00e9fl\u00e9chie. Pour \u03b1 = 1, tous les sons incidents sont absorb\u00e9s.<br \/>En fonction du coefficient d&#8217;absorption acoustique pond\u00e9r\u00e9 par les panneaux acoustiques atteignent, ces panneaux sont affect\u00e9s \u00e0 des classes d&#8217;absorption\u00a0: A, B, C, D ou E. Cela se fait dans le cadre d\u2019une proc\u00e9dure d\u00e9finie dans la norme DIN EN 11654 (\u00ab\u00a0Absorption acoustique pour utilisation dans les b\u00e2timents\u00a0\u00bb).<\/p><p>Il est important de noter que la capacit\u00e9 d&#8217;absorption la plus \u00e9lev\u00e9e (classe A) ne signifie pas qu&#8217;il s&#8217;agit de la &#8220;meilleure&#8221; classe. En fonction des conditions acoustiques des pi\u00e8ces, chaque classe d&#8217;absorbeur a plut\u00f4t son domaine d&#8217;application sp\u00e9cifique ou sa justification. En effet, les mat\u00e9riaux des diff\u00e9rentes classes d&#8217;absorbeurs compl\u00e8tent l&#8217;absorption acoustique d\u00e9j\u00e0 pr\u00e9sente dans les pi\u00e8ces en fonction de la fr\u00e9quence. Le type et la mesure dans laquelle cela est n\u00e9cessaire d\u00e9pendent du type d&#8217;utilisation de la pi\u00e8ce. Cependant, comme l&#8217;acoustique \u00e9quilibr\u00e9e d&#8217;une pi\u00e8ce n\u00e9cessite \u00e9galement la r\u00e9flexion des ondes sonores, on produit des panneaux acoustiques r\u00e9fl\u00e9chissant le son, qui sont d\u00e9crits comme non class\u00e9s.<\/p><p>A : 0,90 &#8230; 1,00 \u03b1w (coefficient d&#8217;absorption acoustique pond\u00e9r\u00e9)<\/p><p>B : 0,80 &#8230; 0,85 \u03b1w<\/p><p>C : 0,60 &#8230; 0,75 \u03b1w<\/p><p>D : 0,30 &#8230; 0,55 \u03b1w<\/p><p>E : 0,15 &#8230; 0,25 \u03b1w<\/p><p>Non-classifi\u00e9 : 0.00 &#8230; 0.10 \u03b1w<\/p><p>\u00a0<\/p><p>L\u2019erreur type : <em>\u00ab\u00a0Seuls les absorbeurs de classe A fonctionnent le mieux\u00a0\u00bb<\/em> (faux)<br \/>Contrairement \u00e0 une opinion r\u00e9pandue, les classes d&#8217;absorption A, B, C et D ne v\u00e9hiculent aucune pond\u00e9ration de la qualit\u00e9 au sens d&#8217;une note scolaire. La classe est simplement une cat\u00e9gorisation pour montrer l&#8217;absorption dans diff\u00e9rentes gammes de fr\u00e9quences. Elle est descriptive et non \u00e9valuative. La classe C est suffisante pour la plupart des pi\u00e8ces \u00e0 \u00e9quiper.<strong><em><br \/><br \/><\/em><\/strong><\/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\" 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 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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=\"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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href=\"https:\/\/www.preform.de\/fr\/contact\/\">\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\">Contactez-nous <\/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<div class=\"elementor-element elementor-element-11dff7e elementor-widget elementor-widget-global elementor-global-4223 elementor-widget-spacer\" data-id=\"11dff7e\" data-element_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-50 elementor-top-column elementor-element elementor-element-9876897 elementor-hidden-tablet elementor-hidden-phone\" data-id=\"9876897\" data-element_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<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Classes d&#8217;absorption\/coefficient d&#8217;absorption acoustique Le coefficient d&#8217;absorption acoustique \u03b1 indique la taille de la partie absorb\u00e9e du son total. \u03b1 = 0 signifie qu&#8217;il n&#8217;y a pas d&#8217;absorption, tout le son est r\u00e9fl\u00e9chi. Pour \u03b1 = 0,5, 50% de l&#8217;\u00e9nergie [&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-16661","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Explications sur la classe\/le coefficient d&#039;absorption | PREFORM<\/title>\n<meta name=\"description\" content=\"Il est important de noter que la capacit\u00e9 d&#039;absorption la plus \u00e9lev\u00e9e d\u00e9finie par la classe A ne signifie pas qu&#039;il s&#039;agit de la &quot;meilleure&quot; classe.\" \/>\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\/classes-d-absorption\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Explications sur la classe\/le coefficient d&#039;absorption | PREFORM\" \/>\n<meta property=\"og:description\" content=\"Il est important de noter que la capacit\u00e9 d&#039;absorption la plus \u00e9lev\u00e9e d\u00e9finie par la classe A ne signifie pas qu&#039;il s&#039;agit de la &quot;meilleure&quot; 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