[en] Over the last few years, some studies showed that the acoustic energy density in closed or semi-closed spaces may be the solution of a diffusion equation. This theory allows non-uniform repartition of energy, and is especially relevant in room acoustics for long rooms or complex
spaces such as networks of rooms. In this work, the three-dimensional diffusion equation is solved directly by using a finite-element solver. This approach is used to simulate the acoustics of coupled rooms in terms of spatial variations of intensity levels and sound decay. The obtained results match satisfactorily with a model based on the classical statistical theory of room acoustics, but it allows to perform a finer spatial description of the acoustics of coupled rooms.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Valeau, Vincent
Picaut, Judicaël
Sakout, Anas
Billon, Alexis ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage
Language :
English
Title :
Simulation of the acoustics of coupled rooms by numerical resolution of a diffusion equation
Publication date :
April 2004
Event name :
18th International Congress on Acoustics, Kyoto
Event organizer :
EAA et ASA
Event place :
Kyoto, Japan
Audience :
International
Funders :
ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie