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Nonlinear sound reverberation in enclosures

AuthorsMoreno, Antonio; Rodríguez Alves, Rosa M.; Fernández, M. José
KeywordsSound reverberation
Nonlinear signals
Scale room models
Issue DateOct-2008
PublisherSociedade Portuguesa de Acústica
CitationAcústica 2008 Conference Proceedings. Architectural Acoustics ; 48
AbstractA model on nonlinear sound reverberation of enclosures will be presented. The classical statistical theory of sound propagation in enclosures has been enlarged to include non linear excitation signals. Numeric computations as well as experimental results indicate reverberation times shorter than under linear conditions. An equation relating reverberation time under nonlinear conditions with reverberation time under linear conditions through an intensity nonlinear parameter has been derived. Some repercussions on experimental room acoustic studies (actual and reduced scale room models) will also be commented.
Description6 pages, 3 figures.-- Communication presented at: Acústica 2008 (Coimbra, Portugal, 20-22 Oct 2008), comprising: V Congresso Ibérico de Acústica, XXXIX Congreso Español de Acústica TecniAcústica 2008, Acoustics European Symposium, ExpoAcústica 2008.
Appears in Collections:(IA) Comunicaciones congresos
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