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Absorption of sound by a strip of absorptive material in a diffuse sound field

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FormatText, Article
SubjectAcoustics
Abstract
The random incidence sound absorption coefficient is calculated for a narrow strip of absorbing material set in an otherwise reflecting plane. The assumptions made are that the material is of the locally reacting type, with a real normal admittance. The effect of an imaginary component of admittance is discussed qualitatively. The results show the increase in absorption coefficient that occurs at small widths due to diffraction. Consideration is also given to the absorption of rectangular patches having both dimensions in the diffraction range. The standard reverberation room measurement of sound absorption is examined.
Publication date
In
  • Journal of the Acoustical Society of America 31, no. 5 (1 October 1959): 595–599.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-RP-83
NRC numberNRCC 5163
NRC-IRC-2879
NPARC number20374079
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Record identifier06f50f5e-20c4-412a-9fa3-05064cc0622a
Record created2012-07-23
Record modified2023-12-22
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