Absorption of Diffuse Sound by a Strip or Rectangular Patch of Absorptive Material | Zendy

T. D. Northwood | Zendy

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Absorption of Diffuse Sound by a Strip or Rectangular Patch of Absorptive Material

Author(s) -

T. D. Northwood

Publication year - 1963

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.1918669

Subject(s) - reverberation , reverberation room , noise reduction coefficient , acoustics , absorption (acoustics) , room acoustics , materials science , sound (geography) , attenuation coefficient , range (aeronautics) , architectural acoustics , optics , physics , composite material , porosity

Previous calculations of the effective absorption coefficient of a rectangular patch of absorptive material have been extended in several respects. The new results are applicable to locally reacting materials for any size of patch and for a wide range of complex admittance. Specific use of the results is made in an examination of the reverberation-room method of measuring sound-absorption coefficients.Les calculs ant\ue9rieurs du coefficient d'absorption efficace d'une pi\ue8ce de mat\ue9riau absorbant de forme rectangulaire ont \ue9t\ue9 \ue9largis \ue0 plusieurs \ue9gards. Les nouveaux r\ue9sultats sont applicables aux mat\ue9riaux \ue0 r\ue9action localis\ue9e, et ce pour toute dimension de pi\ue8ce et pour une vaste gamme de valeurs d'admittance complexes. L'utilisation sp\ue9cifique des r\ue9sultats est r\ue9alis\ue9e dans l'examen de la m\ue9thode de mesure du coefficient d?absorption acoustique avec salle de r\ue9verb\ue9ration.Peer reviewed: NoNRC publication: Ye

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