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Convention Paper

Fast Rendering of Sound Occlusion and Diffraction Effects for Virtual Acoustic Environments

Authors: Tsingos, Nicolas; Gascuel, Jean-Dominique

AES Convention 104 · Paper 4699 · May 1998

Abstract

We present a new approach to efficiently compute effects of sound occlusion and diffraction to obstacles in general virtual acoustic environments. Based on the Fresnel-Kirchoff approximation to diffraction, our method uses a 3-D model of the environment and computer graphics hardware to evaluate diffraction effects between a sound source and a receiver position. No further hypothesis is needed on the diffracting domain. This method allows us to compute attenuation data and filters which can then be used for auralization. The method can also be extended to indirect sound propagation paths.

Details

Published in
AES Convention 104
AES Convention
104
Paper number
4699
Publication date
May 6, 1998
Session subject
Audio in Virtual Reality Systems
Affiliation
iMAGIS/GRAVIR-IMAG, Grenoble, France (See document for exact affiliation information.)
Type
Convention Paper