{"id":27297,"date":"2022-06-23T12:59:08","date_gmt":"2022-06-23T11:59:08","guid":{"rendered":"https:\/\/www.imperalum.com\/sistemas-ressonantes\/"},"modified":"2022-10-24T16:56:26","modified_gmt":"2022-10-24T15:56:26","slug":"sistemas-ressonantes","status":"publish","type":"page","link":"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sistemas-ressonantes\/","title":{"rendered":"Resonant Systems"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"27297\" class=\"elementor elementor-27297 elementor-22867\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-277876ed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"277876ed\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-30fc7334\" data-id=\"30fc7334\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\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-83b9275\" data-id=\"83b9275\" data-element_type=\"column\" data-e-type=\"column\">\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-3b18d164 elementor-align-right elementor-widget elementor-widget-breadcrumbs\" data-id=\"3b18d164\" data-element_type=\"widget\" data-e-type=\"widget\" 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.imperalum.com\/en\/\">Home<\/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-b8daabb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b8daabb\" data-element_type=\"section\" data-e-type=\"section\">\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-33 elementor-top-column elementor-element elementor-element-a50f4cb\" data-id=\"a50f4cb\" data-element_type=\"column\" data-e-type=\"column\">\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-d76278d elementor-widget elementor-widget-heading\" data-id=\"d76278d\" 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<h2 class=\"elementor-heading-title elementor-size-default\">General Acoustics Concepts <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09ce9fb elementor-nav-menu__align-justify elementor-nav-menu--dropdown-tablet elementor-nav-menu__text-align-aside elementor-nav-menu--toggle elementor-nav-menu--burger elementor-widget elementor-widget-global elementor-global-25283 elementor-widget-nav-menu\" data-id=\"09ce9fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;vertical&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;fas fa-caret-down&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;toggle&quot;:&quot;burger&quot;}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"Menu\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-vertical e--pointer-background e--animation-fade\">\n\t\t\t\t<ul id=\"menu-1-09ce9fb\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27320\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/manual-de-acustica\/\" class=\"elementor-item\">Acoustics Manual<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27321\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/o-som-no-ar\/\" class=\"elementor-item\">The Sound in the Air<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27322\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/velocidade-de-propagacao-do-som\/\" class=\"elementor-item\">Speed of Sound Propagation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27323\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/comprimento-de-onda\/\" class=\"elementor-item\">Wavelength<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27324\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-de-pressao-e-de-potencia-sonora\/\" class=\"elementor-item\">Pressure and Sound Power Level<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27325\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-sonoro\/\" class=\"elementor-item\">Sound Level<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27326\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/tempo-de-reverberacao\/\" class=\"elementor-item\">Reverberation Time<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27327\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/bandas-de-frequencia\/\" class=\"elementor-item\">Frequency Bands<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27328\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sons-aereos-e-de-percussao\/\" class=\"elementor-item\">Air and Percussion Sounds<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27527\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/normas\/\" class=\"elementor-item\">Standards<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27528\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/indice-de-isol-a-sons-aereos\/\" class=\"elementor-item\">Airborne Sound Insulation Index<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27529\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/indice-de-isol-a-sons-de-percussao\/\" class=\"elementor-item\">Percussion Sound Insulation Index<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27530\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/reducao-sonora-de-revestimentos-de-piso-ou-sistemas-de-pavimento-flutuante\/\" class=\"elementor-item\">Sound Reduction from Floor Coverings or Floating Floor Systems<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27531\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/transmissao-marginal\/\" class=\"elementor-item\">Marginal Transmission<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27532\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/consideracoes-gerais\/\" class=\"elementor-item\">General Considerations<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27533\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/solucoes-para-correccao-acustica-de-espacos\/\" class=\"elementor-item\">Solutions for Acoustic Correction of Spaces<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27534\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/materiais-porosos\/\" class=\"elementor-item\">Porous Materials<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27329\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sistemas-ressonantes\/\" class=\"elementor-item\">Resonant Systems<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-28292\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/solucoes-construtivas-imperalum\/\" class=\"elementor-item\">Imperalum&#8217;s Building Solutions<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t<div class=\"elementor-menu-toggle\" role=\"button\" tabindex=\"0\" aria-label=\"Menu Toggle\" aria-expanded=\"false\">\n\t\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--open eicon-menu-bar\"><\/i><i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--close eicon-close\"><\/i>\t\t<\/div>\n\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-09ce9fb\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27320\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/manual-de-acustica\/\" class=\"elementor-item\" tabindex=\"-1\">Acoustics Manual<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27321\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/o-som-no-ar\/\" class=\"elementor-item\" tabindex=\"-1\">The Sound in the Air<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27322\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/velocidade-de-propagacao-do-som\/\" class=\"elementor-item\" tabindex=\"-1\">Speed of Sound Propagation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27323\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/comprimento-de-onda\/\" class=\"elementor-item\" tabindex=\"-1\">Wavelength<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27324\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-de-pressao-e-de-potencia-sonora\/\" class=\"elementor-item\" tabindex=\"-1\">Pressure and Sound Power Level<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27325\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-sonoro\/\" class=\"elementor-item\" tabindex=\"-1\">Sound Level<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27326\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/tempo-de-reverberacao\/\" class=\"elementor-item\" tabindex=\"-1\">Reverberation Time<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27327\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/bandas-de-frequencia\/\" class=\"elementor-item\" tabindex=\"-1\">Frequency Bands<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27328\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sons-aereos-e-de-percussao\/\" class=\"elementor-item\" tabindex=\"-1\">Air and Percussion Sounds<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27527\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/normas\/\" class=\"elementor-item\" tabindex=\"-1\">Standards<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27528\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/indice-de-isol-a-sons-aereos\/\" class=\"elementor-item\" tabindex=\"-1\">Airborne Sound Insulation Index<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27529\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/indice-de-isol-a-sons-de-percussao\/\" class=\"elementor-item\" tabindex=\"-1\">Percussion Sound Insulation Index<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27530\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/reducao-sonora-de-revestimentos-de-piso-ou-sistemas-de-pavimento-flutuante\/\" class=\"elementor-item\" tabindex=\"-1\">Sound Reduction from Floor Coverings or Floating Floor Systems<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27531\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/transmissao-marginal\/\" class=\"elementor-item\" tabindex=\"-1\">Marginal Transmission<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27532\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/consideracoes-gerais\/\" class=\"elementor-item\" tabindex=\"-1\">General Considerations<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27533\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/solucoes-para-correccao-acustica-de-espacos\/\" class=\"elementor-item\" tabindex=\"-1\">Solutions for Acoustic Correction of Spaces<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27534\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/materiais-porosos\/\" class=\"elementor-item\" tabindex=\"-1\">Porous Materials<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27329\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sistemas-ressonantes\/\" class=\"elementor-item\" tabindex=\"-1\">Resonant Systems<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-28292\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/solucoes-construtivas-imperalum\/\" class=\"elementor-item\" tabindex=\"-1\">Imperalum&#8217;s Building Solutions<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\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-66 elementor-top-column elementor-element elementor-element-c9f0490\" data-id=\"c9f0490\" data-element_type=\"column\" data-e-type=\"column\">\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-5443c01 elementor-widget elementor-widget-text-editor\" data-id=\"5443c01\" 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<hr>\n<p>Resonant systems allow, by mechanical absorption, sound energy to be dissipated indoors and thus modify the reverberation time of enclosures. These systems can be subdivided into two types the resonant panels and the Helmholtz resonators.<\/p>\n<p>Resonant panels (next figure) are extremely effective, and recommended, for correcting gaps in the low frequency bands when the distance from the rigid element (wall), where the porous systems should be placed, becomes too great.<\/p>\n<p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_1.gif\"><img decoding=\"async\" class=\"aligncenter wp-image-1759 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_1.gif\" alt=\"Sistemas Ressonantes_1\" width=\"90\" height=\"196\"><\/a>The expression for determining the resonance frequency <strong>f<sub>r<\/sub><\/strong> of panels of this type, with surface mass m (expressed in kg\/m<sup>2<\/sup> ) and moved away from the rigid element by the distance<strong> d<\/strong> (in cm), is the following:<\/p>\n<p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_2.gif\"><img decoding=\"async\" class=\"aligncenter wp-image-1760 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_2.gif\" alt=\"Sistemas Ressonantes_2\" width=\"118\" height=\"62\"><\/a><\/p>\n<p>Resonant panels are efficient at the low frequencies of the spectrum, but suffer from the fact that they are very selective &#8211; as they are sized for a specific resonant frequency. To reduce the selectivity involved and to enable the panel to absorb sound energy over a wider frequency range, a porous material can be placed on its back, thus achieving a more extensive frequency behavior.<\/p>\n<p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_3.gif\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-1761 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_3.gif\" alt=\"Sistemas Ressonantes_3\" width=\"378\" height=\"206\"><\/a>The Helmholtz resonator is defined by an acoustic cavity (e.g. a bottle without a cork), or an analogous system.<\/p>\n<p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_4.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1762 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_4.gif\" alt=\"Sistemas Ressonantes_4\" width=\"353\" height=\"160\"><\/a><\/p>\n<p>The incidence of sound waves on the inlet cross-sectional surface of the bottleneck imparts alternate displacements to the air mass contained therein, accompanied by energy dissipation due to the friction of the air against the walls of the bottleneck. A resonator is rheologically modeled by a mass-spring system with damping, where the air in the neck corresponds to the mass element, the air contained in the resonator body to the spring element, and the frictional energy dissipation mechanisms to the respective damping. Similarly, it is also possible to define a resonance frequency for this type of system, with volume <strong>V<\/strong>, straight section area of the &#8220;neck&#8221; <strong>S<\/strong> and neck length I:<\/p>\n<p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_5.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1763 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_5.gif\" alt=\"Sistemas Ressonantes_5\" width=\"140\" height=\"68\"><\/a><\/p>\n<p>This system is also selective in the frequency domain. However, this selectivity can be reduced by introducing sound absorbing material into the resonator body.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.imperalum.com\/?solucoes=sistemas-ressonantes\" alt=\"\"><\/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<\/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>General Acoustics Concepts Resonant systems allow, by mechanical absorption, sound energy to be dissipated indoors and thus modify the reverberation time of enclosures. These systems can be subdivided into two types the resonant panels and the Helmholtz resonators. Resonant panels (next figure) are extremely effective, and recommended, for correcting gaps in the low frequency bands [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":27567,"menu_order":187,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-27297","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Resonant Systems - Imperalum<\/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:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sistemas-ressonantes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Resonant Systems - Imperalum\" \/>\n<meta property=\"og:description\" content=\"General Acoustics Concepts Resonant systems allow, by mechanical absorption, sound energy to be dissipated indoors and thus modify the reverberation time of enclosures. These systems can be subdivided into two types the resonant panels and the Helmholtz resonators. Resonant panels (next figure) are extremely effective, and recommended, for correcting gaps in the low frequency bands [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/sistemas-ressonantes\/\" \/>\n<meta property=\"og:site_name\" content=\"Imperalum\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/imperalum\/\" \/>\n<meta property=\"article:modified_time\" content=\"2022-10-24T15:56:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/Sistemas-Ressonantes_1.gif\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@Imperalum1\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.imperalum.com\\\/en\\\/solutions\\\/acoustic-insulation\\\/sistemas-ressonantes\\\/\",\"url\":\"https:\\\/\\\/www.imperalum.com\\\/en\\\/solutions\\\/acoustic-insulation\\\/sistemas-ressonantes\\\/\",\"name\":\"Resonant Systems - 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