{"id":4339,"date":"2025-09-15T17:10:24","date_gmt":"2025-09-15T15:10:24","guid":{"rendered":"https:\/\/avant4degres.fr\/?page_id=4339"},"modified":"2026-08-13T20:20:44","modified_gmt":"2026-08-13T18:20:44","slug":"isolation-acoustique-2","status":"publish","type":"page","link":"https:\/\/avant4degres.fr\/en\/isolation-acoustique-2\/","title":{"rendered":"Isolation acoustique #2"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"4339\" class=\"elementor elementor-4339\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2672b07 e-flex e-con-boxed e-con e-parent\" data-id=\"2672b07\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de6998c elementor-widget elementor-widget-heading\" data-id=\"de6998c\" data-element_type=\"widget\" data-e-type=\"widget\" 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\">Isolation acoustique #2<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c6dfaa elementor-widget elementor-widget-text-editor\" data-id=\"6c6dfaa\" data-element_type=\"widget\" data-e-type=\"widget\" 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><em>16 septembre 2025<\/em><\/p>\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c912ef2 e-grid e-con-boxed e-con e-parent\" data-id=\"c912ef2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b458248 elementor-widget elementor-widget-image\" data-id=\"b458248\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-300x300.png\" class=\"attachment-medium size-medium wp-image-4346\" alt=\"\" srcset=\"https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-300x300.png 300w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-1024x1024.png 1024w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-150x150.png 150w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-768x768.png 768w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22-600x600.png 600w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique22.png 1185w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\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-544e551 elementor-widget elementor-widget-image\" data-id=\"544e551\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-1024x1024.png\" class=\"attachment-large size-large wp-image-4349\" alt=\"\" srcset=\"https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-1024x1024.png 1024w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-300x300.png 300w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-150x150.png 150w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-768x768.png 768w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-1536x1536.png 1536w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-2048x2048.png 2048w, https:\/\/avant4degres.fr\/wp-content\/uploads\/2025\/09\/Acoustique23-600x600.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e02cdd4 e-flex e-con-boxed e-con e-parent\" data-id=\"e02cdd4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-17769b8 elementor-widget elementor-widget-text-editor\" data-id=\"17769b8\" data-element_type=\"widget\" data-e-type=\"widget\" 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>Dans un b\u00e2timent, les sources de bruits sont multiples\u00a0:<\/p><p>&#8211; <strong>bruits a\u00e9riens ext\u00e9rieurs<\/strong>\u00a0: trafic routier\/ferroviaire\/a\u00e9rien, chantiers\u2026<\/p><p>&#8211; <strong>bruits a\u00e9riens int\u00e9rieurs<\/strong>\u00a0: voix, musique, t\u00e9l\u00e9vision\u2026<\/p><p>&#8211; <strong>bruits solidiens<\/strong> (d\u2019impact)\u00a0: bruits de pas, chutes d\u2019objets\u2026<\/p><p>&#8211; bruits d\u2019\u00e9quipement\u00a0: ascenseur, VMC\u2026<\/p><p>L\u2019objectif de l\u2019isolation acoustique est de r\u00e9duire la transmission du son depuis sa source jusqu\u2019aux lieux que l\u2019on cherche \u00e0 prot\u00e9ger. Il existe trois chemins\u00a0: la <strong>transmission directe<\/strong> \u00e0 travers une paroi s\u00e9parative, les <strong>transmissions lat\u00e9rales<\/strong> et les <strong>transmissions parasites<\/strong> notamment li\u00e9es au passage des r\u00e9seaux (image 1).<\/p><p>L\u2019isolation acoustique est caract\u00e9ris\u00e9e par deux mesures\u00a0:<\/p><p>&#8211; l\u2019<strong>isolement acoustique standardis\u00e9 pond\u00e9r\u00e9<\/strong> D<sub>nT,w<\/sub> est mesur\u00e9 in situ (en dB) et prend en compte tous les types de transmission. C\u2019est la mesure qui figure dans la r\u00e9glementation. Il est suivi de deux indices entre parenth\u00e8se (C\u00a0; C<sub>tr<\/sub>) qui correspondent respectivement au bruit rose et au bruit routier\u00a0;<\/p><p>&#8211; l\u2019<strong>affaiblissement acoustique pond\u00e9r\u00e9<\/strong> R<sub>W<\/sub> est mesur\u00e9 en laboratoire (en dB) et prend en compte uniquement la transmission directe. <strong>C\u2019est la mesure qui figure dans les fiches techniques des mat\u00e9riaux.<\/strong> Il est pond\u00e9r\u00e9 par deux indices qui correspondent au bruit rose (R<sub>A<\/sub>) et au bruit routier (R<sub>A,tr<\/sub>).<\/p><p>Pour \u00eatre efficace, <strong>il faut isoler \u00e0 la source du bruit et toutes les surfaces de la pi\u00e8ce<\/strong>. L\u2019isolement acoustique ne d\u00e9pend pas que de l\u2019\u00e9paisseur de la paroi, mais aussi de la profondeur de la pi\u00e8ce : dans une petite pi\u00e8ce, on entend plus facilement ce qu\u2019il se passe dans une pi\u00e8ce voisine. L\u2019affaiblissement acoustique total de la pi\u00e8ce est proportionnel \u00e0 l\u2019affaiblissement et \u00e0 la surface de chacun de ses \u00e9l\u00e9ments. <strong>Chaque \u00e9l\u00e9ment, m\u00eame petit (porte, vitrage), a donc un impact sur la performance de l\u2019isolation acoustique.<\/strong> En revanche, <strong>l\u2019absorption n\u2019a pas d\u2019influence sur l\u2019isolation d\u2019une cloison<\/strong> (image 2).<\/p><p>\ud83c\udfa8 Les illustrations ont \u00e9t\u00e9 modifi\u00e9es d\u2019apr\u00e8s mes cours d\u2019acoustique du Master \u00c9coconstruction de Cergy.<\/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-0fc2199 elementor-align-center elementor-mobile-align-right elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"0fc2199\" data-element_type=\"widget\" data-e-type=\"widget\" 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-sm elementor-animation-grow\" href=\"https:\/\/avant4degres.fr\/en\/mes-offres-daccompagnement-dans-votre-parcours-de-renovation\/\" target=\"_blank\">\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\">Je veux am\u00e9liorer l'acoustique dans mon logement<\/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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Isolation acoustique #2 16 septembre 2025 Dans un b\u00e2timent, les sources de bruits sont multiples\u00a0: &#8211; bruits a\u00e9riens ext\u00e9rieurs\u00a0: trafic routier\/ferroviaire\/a\u00e9rien, chantiers\u2026 &#8211; bruits a\u00e9riens int\u00e9rieurs\u00a0: voix, musique, t\u00e9l\u00e9vision\u2026 &#8211; bruits solidiens (d\u2019impact)\u00a0: bruits de pas, chutes d\u2019objets\u2026 &#8211; bruits d\u2019\u00e9quipement\u00a0: ascenseur, VMC\u2026 L\u2019objectif de l\u2019isolation acoustique est de r\u00e9duire la transmission du son depuis [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"full-width","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"off","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"on","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"off","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","footnotes":""},"class_list":["post-4339","page","type-page","status-publish","hentry","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Isolation acoustique #2 - Avant 4 degr\u00e9s<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/avant4degres.fr\/en\/isolation-acoustique-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Isolation acoustique #2 - Avant 4 degr\u00e9s\" \/>\n<meta property=\"og:description\" content=\"Isolation acoustique #2 16 septembre 2025 Dans un b\u00e2timent, les sources de bruits sont multiples\u00a0: &#8211; 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