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The effect of stationary diffusers in the measurement of sound absorption coefficients in a reverberation room: An experimental study

✍ Scribed by G. Benedetto; E. Brosio; R. Spagnolo

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
539 KB
Volume
14
Category
Article
ISSN
0003-682X

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✦ Synopsis

It has not yet been established if stationary diffusers are effective in the measurement

of the sound absorption coefficients of materials in a reverberation room. Although the results of such measurements may be strongly influenced by the use of diffusers, the conditions under which diffusing panels must be used and the number of such panels required have still not been ascertained exactly.

In this paper we report the results of a series of measurements on different kinds of materials, performed in a reverberation room in both the presence and absence of diffusers, in order to establish the effect of diffusing elements on the absorption coefficient values. In some cases variations greater than 40 per cent were observed.

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