Broad spectrum diffusion model for room acoustics ray-tracing algorithms

2000 ◽  
Vol 107 (4) ◽  
pp. 2068-2081 ◽  
Author(s):  
J. J. Embrechts
Keyword(s):  
Ray Tracing ◽  
Diffusion Model ◽  
Broad Spectrum ◽  
Room Acoustics

Including scattering within the room acoustics diffusion model: An analytical approach

2016 ◽  
Vol 140 (4) ◽  
pp. 2659-2669 ◽  
Author(s):  
Cédric Foy ◽  
Judicaël Picaut ◽  
Vincent Valeau
Keyword(s):  
Diffusion Model ◽  
Analytical Approach ◽  
Room Acoustics

Towards a realistic ray tracing for room acoustics

2008 ◽  
Vol 123 (5) ◽  
pp. 3769-3769 ◽  
Author(s):  
Jaume Durany ◽  
Adan Garriga ◽  
Toni Mateos
Keyword(s):  
Ray Tracing ◽  
Room Acoustics

An Energy Diffusion Model for Interior Acoustics With Structural Coupling Using the Boundary Element Method

2012 ◽  
Author(s):  
Joseph M. Corcoran ◽  
Ricardo A. Burdisso
Keyword(s):  
Boundary Element Method ◽  
Diffusion Equation ◽  
Laplace Transform ◽  
Diffusion Process ◽  
Boundary Element ◽  
Diffusion Model ◽  
Acoustic Energy ◽  
Room Acoustics ◽  
Energy Diffusion ◽  
Element Method

Recently, a new model for the propagation of sound in interior volumes known as the acoustic diffusion equation has been explored as an alternative method for acoustic predictions and analysis. The model uses statistical methods standard in high frequency room acoustics to compute a spatial distribution of acoustic energy over time as a diffusion process. For volumes coupled through a structural partition, the energy consumed by structural vibration and acoustic energy transmitted between volumes has been incorporated through a simple acoustic transmission coefficient. In this paper, a Boundary Element Method (BEM) solution to the simple diffusion model is developed. The integral form of the 3D acoustic diffusion equation for coupled volumes is derived using the Laplace transform and Green’s Second Identity. The solution using the BEM is developed as well as an efficient Laplace transform inversion scheme to obtain both steady state and transient interior acoustic energy. In addition, a fully coupled model where both structural and acoustic energy are computed as a diffusion process is proposed. A simple volume configuration is examined as the diffusion models are analyzed and compared to conventional room acoustics analysis methods. Advantages of the energy diffusion methods over conventional methods, such as computation of energy distributions and accurate transmission from one volume to another, are revealed as the comparisons are made.

Computer models in room acoustics: The ray tracing method and the auralization algorithms

2009 ◽  
Vol 55 (6) ◽  
pp. 821-831 ◽  
Author(s):  
Anna Pompei ◽  
M. A. Sumbatyan ◽  
N. F. Todorov
Keyword(s):  
Ray Tracing ◽  
Computer Models ◽  
Room Acoustics ◽  
Ray Tracing Method ◽  
Tracing Method
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