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Measurement of the absorption coefficient of acoustical materials using the sound intensity methodIn this study the possibility of using the two-microphone sound intensity technique to measure the normal incidence and the random incidence sound absorption coefficient was investigated. The normal incidence absorption coefficient was determined by measuring the intensity incidence on the sample and the intensity reflected by the sample placed in an anechoic chamber. The random incidence absorption coefficient was determined by measuring the intensity incident on the sample and the intensity reflected by the sample placed in a reverberation chamber. Absorption coefficient results obtained by the sound intensity technique were compared with standard techniques, namely the reverberation chamber and the standing wave tube. The major advantages of using the sound intensity technique are that it permits 'in situ' measurements and the absorption coefficient for a large range of frequencies can be obtained from a single measurement.
Document ID
19880032963
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Atwal, Mahabir S.
(Paul S. Veneklasen and Associates Santa Monica, CA, United States)
Crocker, Malcolm J.
(Auburn University AL, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Revue d'Acoustique
Volume: 21
Issue: 80, 1
Subject Category
Acoustics
Accession Number
88A20190
Funding Number(s)
CONTRACT_GRANT: NAG1-58
Distribution Limits
Public
Copyright
Other

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