{"id":16963,"date":"2020-06-04T16:30:43","date_gmt":"2020-06-04T14:30:43","guid":{"rendered":"https:\/\/www.preform.de\/?page_id=16963"},"modified":"2020-06-29T14:49:58","modified_gmt":"2020-06-29T12:49:58","slug":"temps-de-reverberation","status":"publish","type":"page","link":"https:\/\/www.preform.de\/fr\/temps-de-reverberation\/","title":{"rendered":"Temps de r\u00e9verb\u00e9ration (T)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"16963\" class=\"elementor elementor-16963\" 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\" 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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\" 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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\">Temps de r\u00e9verb\u00e9ration (T)<\/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>Le temps de r\u00e9verb\u00e9ration (T) est le temps pendant lequel l&#8217;\u00e9nergie sonore dans une pi\u00e8ce est retomb\u00e9e \u00e0 la millioni\u00e8me partie de sa valeur d&#8217;origine, c&#8217;est-\u00e0-dire que le niveau de pression sonore a baiss\u00e9 de 60 dB. En termes simples, il indique le temps qu&#8217;il faut pour qu&#8217;un \u00e9v\u00e9nement sonore devienne inaudible. En termes techniques, le temps n\u00e9cessaire pour que le niveau de pression sonore dans la pi\u00e8ce baisse de 60 d\u00e9cibels a \u00e9t\u00e9 d\u00e9fini comme le temps de r\u00e9verb\u00e9ration T.<\/p><p>Les mat\u00e9riaux de surface d&#8217;une pi\u00e8ce, ses murs, ses plafonds, son sol ont une influence significative sur ses propri\u00e9t\u00e9s de r\u00e9verb\u00e9ration. La r\u00e9verb\u00e9ration d&#8217;une pi\u00e8ce a une influence positive ou n\u00e9gative sur une activit\u00e9 qui s&#8217;y d\u00e9roule. Les surfaces lisses et r\u00e9fl\u00e9chissant le son cr\u00e9ent un environnement de travail tr\u00e8s r\u00e9verb\u00e9rant et ne conviennent pas au travail concentr\u00e9. La s\u00e9lection et la disposition des mat\u00e9riaux de surface doivent donc \u00eatre adapt\u00e9es \u00e0 l&#8217;activit\u00e9 pr\u00e9vue. Les panneaux muraux acoustiques ou les cloisons acoustiques dans les bureaux sont souvent utilis\u00e9s pour r\u00e9duire le temps de r\u00e9verb\u00e9ration.<\/p><p>\u00c0 cet \u00e9gard, le temps de r\u00e9verb\u00e9ration est un param\u00e8tre important pour l&#8217;\u00e9valuation acoustique d&#8217;une pi\u00e8ce. C\u2019est une mesure de la r\u00e9duction d&#8217;\u00e9nergie dans une pi\u00e8ce. Plus il y a d&#8217;absorption sonore dans une pi\u00e8ce, plus l&#8217;\u00e9nergie sonore est r\u00e9duite rapidement et plus le temps de r\u00e9verb\u00e9ration est court. Les gens se sentent plus \u00e0 l&#8217;aise lorsque le temps de r\u00e9verb\u00e9ration est compris entre 0,2 et 0,5 seconde. En coop\u00e9ration avec des architectes et des planificateurs sp\u00e9cialis\u00e9s, nous avons d\u00e9velopp\u00e9 des outils pour le calcul du temps de r\u00e9verb\u00e9ration et pour la conception acoustique des salles.<\/p><p>Le temps de r\u00e9verb\u00e9ration peut \u00eatre calcul\u00e9 \u00e0 l&#8217;aide de la formule de r\u00e9verb\u00e9ration de \u00ab\u00a0Sabine\u00a0\u00bb.<\/p><p>La d\u00e9couverte de la relation fondamentale entre le volume d&#8217;une pi\u00e8ce, l&#8217;absorption acoustique des surfaces pr\u00e9sentes dans la pi\u00e8ce et le temps de r\u00e9verb\u00e9ration remonte aux travaux de recherche exp\u00e9rimentale du physicien am\u00e9ricain Wallace Clement Sabine (1868-1919). En 1898, Sabine a d\u00e9couvert que le temps de r\u00e9verb\u00e9ration T est proportionnel au volume de la pi\u00e8ce V et inversement proportionnel \u00e0 la surface d&#8217;absorption \u00e9quivalente A.<\/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 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