[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
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