On the use of a diffusion model for acoustically coupled rooms

Billon, Alexis; Valeau, Vincent; Sakout, Anas; Picaut, Judicaël

doi:10.1121/1.2338814

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Article (Scientific journals)

On the use of a diffusion model for acoustically coupled rooms

Billon, Alexis; Valeau, Vincent; Sakout, Anas et al.

2006 • In Journal of the Acoustical Society of America, 120 (4), p. 2043-2054

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https://hdl.handle.net/2268/32275

DOI
10.1121/1.2338814

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Keywords :

Acoustics; Room acoustics; Diffusion model

Abstract :

[en] A numerical model is proposed to predict the reverberant sound field in a system of two coupled volumes that are connected through an open aperture. The model is based on the numerical implementation of a diffusion model that has already been applied to predict the sound-energy distribution and the sound decay in single rooms. In comparison with the statistical theory, the proposed approach permits the prediction of the sound field by taking into account the sound source location and the receiver locations as well as the transition from one room to the other at the coupling aperture. Moreover, the diffusion model results match satisfactorily the experimental data in terms of sound-pressure level and reverberation times, both in the room containing the source and in the receiving room. Simulations with a ray-based model are also carried out, leading to results similar to those of the diffusion model, but at a cost of larger computation times.

Disciplines :

Engineering, computing & technology: Multidisciplinary, general & others

Author, co-author :

Billon, Alexis ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage

Valeau, Vincent

Sakout, Anas

Picaut, Judicaël

Language :

English

Title :

On the use of a diffusion model for acoustically coupled rooms

Publication date :

2006

Journal title :

Journal of the Acoustical Society of America

ISSN :

0001-4966

eISSN :

1520-8524

Publisher :

American Institute of Physics, Melville, United States - New York

Volume :

120

Issue :

Pages :

2043-2054

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://dx.doi.org/10.1121/1.2338814

Funders :

ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie

Available on ORBi :

since 19 February 2010

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