{"id":4324,"date":"2026-05-20T07:39:49","date_gmt":"2026-05-20T07:39:49","guid":{"rendered":"https:\/\/harmonium.es\/?p=4324"},"modified":"2026-05-20T08:07:10","modified_gmt":"2026-05-20T08:07:10","slug":"how-many-acoustic-panels-to-reduce-echo","status":"publish","type":"post","link":"https:\/\/harmonium.es\/en\/cuantos-paneles-acusticos-necesitas-para-eliminar-eco\/","title":{"rendered":"How to Calculate How Many Acoustic Panels You Need to Eliminate Echo"},"content":{"rendered":"

<\/p>\n\n\n\n

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\"\"<\/figure>\n<\/figure>\n<\/div>\n\n\n\n
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Echo Is Not a Noise Problem, but a Reverberation Issue<\/h2>\n\n\n\n

When we talk about echo in interiors, we are usually not referring to a clear repetition of sound, but to an accumulation of sound reflections.<\/p>\n\n\n\n

Sound bounces off hard surfaces and remains in the space longer than desired. This creates a constant background noise sensation and reduces spatial quality.<\/p>\n\n\n\n

The parameter that measures this phenomenon is the reverberation time (RT60): the time it takes for sound to decrease by 60 dB after the source stops.<\/p>\n\n\n\n

If the RT60 is too high:<\/p>\n\n\n\n

    \n
  • Speech intelligibility decreases<\/li>\n\n\n\n
  • Listening fatigue increases<\/li>\n\n\n\n
  • Acoustic comfort is reduced<\/li>\n<\/ul>\n\n\n\n

    The goal of acoustic treatment is to reduce this time to an appropriate level depending on the space\u2019s function.
    <\/p>\n<\/div>\n<\/div>\n\n\n\n

    <\/p>\n\n\n\n

    Step 1: Calculate the Room Volume<\/h2>\n\n\n\n

    Every acoustic calculation starts with volume.<\/p>\n\n\n\n

    Volume (m\u00b3) = length \u00d7 width \u00d7 height<\/p>\n\n\n\n

    A 30 m\u00b2 office is not the same as a 400 m\u00b2 open-plan space with high ceilings.<\/p>\n\n\n\n

    The greater the volume, the more sound energy circulates.<\/p>\n\n\n\n

    And therefore, the greater the need for sound absorption.<\/p>\n\n\n\n

    Room volume determines the total absorption required to achieve the desired acoustic comfort level.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Step 2: Define the Acoustic Comfort Objective<\/h2>\n\n\n\n

    Each space typology requires a different acoustic response.<\/p>\n\n\n\n

    In acoustic panels for offices, we aim for:
    \u2192 High speech intelligibility
    \u2192 Reduction of background noise<\/p>\n\n\n\n

    In restaurants:
    \u2192 Reduce echo without eliminating atmosphere<\/p>\n\n\n\n

    In meeting rooms:
    \u2192 Clarity and precision in communication<\/p>\n\n\n\n

    There is no universal RT60 value.
    However, one principle applies: reverberation must be adapted to the use of the space.<\/p>\n\n\n\n

    This is where acoustic conditioning shifts from decorative to technical.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    <\/p>\n\n\n\n

    \n
    \n

    Step 3: Calculate the Required Sound Absorption<\/h2>\n\n\n\n

    The number of acoustic panels is not determined by available wall surface.<\/p>\n\n\n\n

    It is calculated based on:<\/p>\n\n\n\n

      \n
    • Room volume<\/li>\n\n\n\n
    • Current RT60<\/li>\n\n\n\n
    • Target RT60<\/li>\n\n\n\n
    • Material absorption coefficient (\u03b1 or NRC)<\/li>\n<\/ul>\n\n\n\n

      Each panel provides absorption measured in sabins (surface area \u00d7 absorption coefficient).<\/p>\n\n\n\n

      Two panels of the same size can therefore deliver completely different performance.<\/p>\n\n\n\n

      It is not about installing more panels \u2014 it is about installing panels with certified acoustic performance.<\/p>\n\n\n\n

      <\/p>\n<\/div>\n\n\n\n

      \n
      \n
      \"\"<\/figure>\n<\/figure>\n<\/div>\n<\/div>\n\n\n\n

      Step 4: Properly Distribute the Acoustic Treatment<\/h2>\n\n\n\n

      Reaching the required absorption value is not enough.<\/p>\n\n\n\n

      Distribution directly affects acoustic performance.<\/p>\n\n\n\n

      In many professional projects, we combine:<\/p>\n\n\n\n

        \n
      • Wall acoustic panels<\/li>\n\n\n\n
      • Suspended ceiling solutions<\/li>\n\n\n\n
      • Elements placed in first-reflection zones<\/li>\n<\/ul>\n\n\n\n

        Reducing echo in offices or restaurants depends not only on quantity, but on treatment strategy.<\/strong><\/p>\n\n\n\n

        <\/p>\n\n\n\n

        Beyond the Calculation: Certified Performance and Compliance<\/h2>\n\n\n\n

        A professional project requires more than aesthetic appeal.<\/p>\n\n\n\n

        Acoustic treatment must consider:<\/p>\n\n\n\n

          \n
        • Fire classification (such as B-s2,d0 for interior applications)<\/li>\n\n\n\n
        • Material durability<\/li>\n\n\n\n
        • Safety and maintenance<\/li>\n\n\n\n
        • Architectural integration<\/li>\n<\/ul>\n\n\n\n

          This is where the difference lies between decorative solutions and truly engineered acoustic systems.<\/p>\n\n\n\n

          Acoustic comfort cannot be based on intuition or marketing claims.<\/p>\n\n\n\n

          <\/p>\n\n\n\n

          <\/p>\n\n\n\n

          Harmonium | Calculation, Performance and Integrated Design<\/h3>\n\n\n\n

          At Harmonium, we work with architects and interior designers who require more than decorative panels.<\/p>\n\n\n\n

          We dimension acoustic conditioning solutions based on the real behavior of the space. We analyse volume, function and certified acoustic performance to define the appropriate strategy.<\/p>\n\n\n\n

          Because eliminating echo is not about covering walls.<\/p>\n\n\n\n

          It is about engineering silence with technical precision.<\/p>\n\n\n\n

          And every space requires its own acoustic strategy.<\/p>","protected":false},"excerpt":{"rendered":"

          Reducing echo is not about guesswork. Discover how to calculate the right number of acoustic panels based on room volume, RT60 reverberation and acoustic comfort objectives.<\/p>","protected":false},"author":3,"featured_media":4326,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/posts\/4324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/comments?post=4324"}],"version-history":[{"count":5,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/posts\/4324\/revisions"}],"predecessor-version":[{"id":4334,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/posts\/4324\/revisions\/4334"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/media\/4326"}],"wp:attachment":[{"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/media?parent=4324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/categories?post=4324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/harmonium.es\/en\/wp-json\/wp\/v2\/tags?post=4324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}