Reference : Introducing atmospheric attenuation within a diffusion model room-acoustic predictions
Scientific journals : Letter to the editor
Engineering, computing & technology : Multidisciplinary, general & others
http://hdl.handle.net/2268/32266
Introducing atmospheric attenuation within a diffusion model room-acoustic predictions
English
Billon, Alexis [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage >]
Picaut, Judicaël [> >]
Foy, Cédric [> >]
Valeau, Vincent [> >]
Sakout, Anas [> >]
2008
Journal of the Acoustical Society of America
American Institute of Physics
123
6
4040-4043
Yes (verified by ORBi)
International
0001-4966
1520-8524
Melville
NY
[en] Acoustics ; Room acoustics ; Diffusion model
[en] This paper presents an extension of a diffusion model for room acoustics to handle the atmospheric attenuation. This phenomenon is critical at high frequencies and in large rooms to obtain correct acoustic predictions. An additional term is introduced in the diffusion equation as well as in the diffusion constant, in order to take the atmospheric attenuation into account. The modified diffusion model is then compared with the statistical theory and a cone-tracing software. Three typical room-acoustic configurations are investigated: a proportionate room, a long room and a flat room. The modified diffusion model agrees well with the statistical theory (when applicable, as in proportionate rooms) and with the cone-tracing software, both in terms of sound pressure levels and reverberation times.
Ademe (France)
Researchers
http://hdl.handle.net/2268/32266
10.1121/1.290387
http://dx.doi.org/10.1121/1.2903872

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