[en] A general model is proposed to simulate the acoustics of coupled rooms. It is based on
a diffusion equation, solved numerically to perform acoustic predictions. The presence of
scattering objects –or the “fittings”– is also taken into account. Distinct sub-volumes can be
defined, representing either coupled volumes or zones with different fitting characteristics.
Some sample results are presented, and compared with ray-tracing results and experimental
data. Two situations are assessed: two coupled classrooms, and a room divided into two
zones, one empty, one fitted. The diffusion-model predictions match the other data
satisfactorily, both in terms of sound attenuation and sound decay. Diffusion-based results
are obtained with the advantage of low computational time compared to ray-tracing results.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Valeau, Vincent
Billon, Alexis ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage
Hodgson, Murray
Picaut, Judicaël
Sakout, Anas
Language :
English
Title :
Prediction of the acoustics of coupled rooms with the acoustic-diffusion model
Publication date :
June 2006
Event name :
9th West Pacific Acoustics Conference
Event place :
Seoul, South Korea
By request :
Yes
Audience :
International
Funders :
ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie