{"id":4307,"date":"2021-12-03T17:04:54","date_gmt":"2021-12-03T16:04:54","guid":{"rendered":"https:\/\/tfi-aachen.de\/testing\/schallabsorption-im-impedanzrohr\/"},"modified":"2025-06-23T08:57:54","modified_gmt":"2025-06-23T06:57:54","slug":"sound-absorption-coefficient-and-impedance-in-impedance-tubes-part-2-transfer-function-method-en-10534-2","status":"publish","type":"page","link":"https:\/\/tfi-aachen.de\/en\/testing\/sound-absorption-coefficient-and-impedance-in-impedance-tubes-part-2-transfer-function-method-en-10534-2\/","title":{"rendered":"Sound absorption coefficient and impedance in impedance tubes \u2013 Part 2: Transfer-function method EN 10534-2"},"content":{"rendered":"\n\n<div id=\"text-with-image-block_61aa12187fd96\" class=\"block text-with-image alignfull icon-above-text no-link\">\n    <div class=\"container\">\n        <div class=\"wrapper bg-dark-gray\">\n            <div class=\"image-wrapper\">\n\t\t\t\t\t\t\t\t            <\/div>\n            <div class=\"text-wrapper\">\n\t\t\t\t                    <div class=\"icon-wrapper\">\n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1\" height=\"1\" src=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/04\/icon_pruefung.svg\" class=\"icon\" alt=\"\" \/>                    <\/div>\n\t\t\t\t                <h1 class=\"title\">Sound absorption coefficient and impedance in impedance tubes \u2013 Part 2: Transfer-function method EN 10534-2<\/h1>\n                <div class=\"text\">\n\t\t\t\t\t                <\/div>\n\t\t\t\t            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n\n<div id=\"intro-block_61b1f46ac2c9b\" class=\"block intro alignfull bg-light-blue\">\n    <div class=\"container\">\n        <div class=\"text\">\n\t\t\t<p style=\"text-align: center;\"><strong>In the impedance tube test, the object is tested with regard to its sound absorption capacity. The sound absorption capacity describes the sound absorbing vs. reflecting properties of the test object. When testing in the impedance tube, only very small samples are needed, ideal for prototypes and for comparative investigations in product development.<\/strong><\/p>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n<div class=\"wp-bootstrap-blocks-row row\">\n\t\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"text-block_61b1f582c2c9d\" class=\"block text alignfull bg-white\">\n    <div class=\"container\">\n        \n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1110\" height=\"624\" src=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2-1110x624.jpg\" alt=\"\" class=\"wp-image-2108\" srcset=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2-1110x624.jpg 1110w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2-533x300.jpg 533w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2-768x432.jpg 768w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2-1536x864.jpg 1536w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_2.jpg 1920w\" sizes=\"auto, (max-width: 1110px) 100vw, 1110px\" \/><figcaption class=\"wp-element-caption\"><strong>Impedance tube of the company Mecanum Siemens<\/strong><\/figcaption><\/figure>\n\n\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"text-block_61b1f5b7c2c9e\" class=\"block text alignfull bg-white\">\n    <div class=\"container\">\n        \n\n<h3 class=\"wp-block-heading\" id=\"prufungseigenschaften\">Testing properties<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Testing according to DIN EN ISO 10534-2<\/li>\n\n\n\n<li>Impedance tube of the company Mecanum Siemens<\/li>\n\n\n\n<li>Impedance tube developed by the Institute for Hearing Technology and Acoustics (IHTA) of the RWTH and TFI<\/li>\n\n\n\n<li>Testing of multi-layered unbonded structures, ideal for floor and wall systems<\/li>\n<\/ul>\n\n\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n<\/div>\n\n\n<div class=\"wp-bootstrap-blocks-row row\">\n\t\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"text-block_61b1f5ecc2c9f\" class=\"block text alignfull bg-white\">\n    <div class=\"container\">\n        \n\n<h3 class=\"wp-block-heading alignwide\" id=\"geeignete-produktarten\" style=\"line-height:1.1\">Suitable product types<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>decoration fabrics,<\/li>\n\n\n\n<li>interior sun protection<\/li>\n\n\n\n<li>resilient floor coverings<\/li>\n\n\n\n<li>home textiles<\/li>\n\n\n\n<li>multilayer modular floor coverings (MMF)<\/li>\n\n\n\n<li>laminate<\/li>\n\n\n\n<li>upholstery fabrics<\/li>\n\n\n\n<li>parquet and wood floor coverings<\/li>\n\n\n\n<li>textile floor coverings<\/li>\n\n\n\n<li>laying underlays<\/li>\n\n\n\n<li>wall and ceiling coverings<\/li>\n\n\n\n<li>sports flooring systems<\/li>\n<\/ul>\n\n\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"text-block_61b1f617c2ca0\" class=\"block text alignfull bg-white\">\n    <div class=\"container\">\n        \n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"482\" height=\"677\" src=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_1.jpg\" alt=\"\" class=\"wp-image-2106\" srcset=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_1.jpg 482w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2021\/12\/tfi_impedanzrohr_1-214x300.jpg 214w\" sizes=\"auto, (max-width: 482px) 100vw, 482px\" \/><figcaption class=\"wp-element-caption\"><strong>Impedance tube during testing. Sound visualised with the acoustic camera. The impedance tube is a development of the Institute for Hearing Technology and Acoustics (IHTA) of the RWTH and the TFI.<\/strong><\/figcaption><\/figure>\n\n\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n<\/div>\n\n\n<div class=\"wp-bootstrap-blocks-row row\">\n\t\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"contact-block_6858fac4212b9\" class=\"block contact bg-white alignfull\">\n    <div class=\"container\">\n        <div class=\"content\">\n            <div class=\"header\">\n                <h3 class=\"title\">YOUR CONTACT PERSON<\/h3>\n            <\/div>\n            <div class=\"image\">\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1281\" src=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px.jpg\" class=\"image\" alt=\"\" srcset=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px.jpg 1920w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px-450x300.jpg 450w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px-1110x741.jpg 1110w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px-768x512.jpg 768w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/210726-TFI-0644-1920px-1536x1025.jpg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/>            <\/div>\n            <div class=\"text\">\n                <p>Dipl. -Ing.<b>Ulrike Balg<\/b><\/p>\n                <p>Fire \/ Building Physics<\/p>\n\t\t\t\t                    <p>Phone: <a href=\"tel: +49 241 9679-00\"> +49 241 9679-00<\/a><\/p>\n\t\t\t\t\t\t\t\t                    <p><a href=\"mailto:u.balg@tfi-aachen.de\">u.balg@tfi-aachen.de<\/a><\/p>\n\t\t\t\t            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-md-6 col-lg-4 col-xl-4\">\n\t\t\t\n\n\n<div id=\"contact-block_60b5fd33e3a33\" class=\"block contact bg-white alignfull\">\n    <div class=\"container\">\n        <div class=\"content\">\n            <div class=\"header\">\n                <h3 class=\"title\">YOUR CONTACT PERSON<\/h3>\n            <\/div>\n            <div class=\"image\">\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1281\" src=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px.jpg\" class=\"image\" alt=\"\" srcset=\"https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px.jpg 1920w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px-450x300.jpg 450w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px-1110x741.jpg 1110w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px-768x512.jpg 768w, https:\/\/tfi-aachen.de\/wp-content\/uploads\/2022\/01\/211123-TFI-1475-1920px-1536x1025.jpg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/>            <\/div>\n            <div class=\"text\">\n                <p>Dr.-Ing. <b>Andreas Zo\u00ebga<\/b><\/p>\n                <p>Head of Testing Laboratory<\/p>\n\t\t\t\t                    <p>Phone: <a href=\"tel:+49 241 9679-00 \">+49 241 9679-00 <\/a><\/p>\n\t\t\t\t\t\t\t\t                    <p><a href=\"mailto:support@tfi-aachen.de\">support@tfi-aachen.de<\/a><\/p>\n\t\t\t\t            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\t<\/div>\n\n\n\n<div class=\"col-12 col-sm-12 col-lg-2 col-xl-2\">\n\t\t\t\t<\/div>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":5267,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":"","_members_access_role":[],"_members_access_error":""},"tags":[],"class_list":["post-4307","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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