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Measurement of the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field
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/content/asa/journal/jasa/136/1/10.1121/1.4881321
2014-06-16
2014-12-25

Abstract

This letter proposes an experimental method to estimate the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field in free-field conditions. Comparisons are made between experiments conducted with this approach, the standard reverberant room method, and numerical simulations using the transfer matrix method. With a simple experimental setup and smaller samples than those required by standards, the results obtained with the proposed approach do not exhibit non-physical trends of the reverberant room method and provide absorption coefficients in good agreement with those obtained by simulations for a laterally infinite material.

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Scitation: Measurement of the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field
http://aip.metastore.ingenta.com/content/asa/journal/jasa/136/1/10.1121/1.4881321
10.1121/1.4881321
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