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SIGGRAPH
1999
ACM

Real-Time Acoustic Modeling for Distributed Virtual Environments

9 years 6 months ago
Real-Time Acoustic Modeling for Distributed Virtual Environments
Realistic acoustic modeling is essential for spatializing sound in distributed virtual environments where multiple networked users move around and interact visually and aurally in a shared virtual world. Unfortunately, current methods for computing accurate acoustical models are not fast enough for real-time auralization of sounds for simultaneously moving sources and receivers. In this paper, we present three new beam tracing algorithms that greatly accelerate computation of reverberation paths in a distributed virtual environment by taking advantage of the fact that sounds can only be generated or heard at the positions of “avatars” representing the users. The priority-driven beam tracing algorithm performs a bestfirst search of a cell adjacency graph, and thus enables new termination criteria with which all early reflection paths can be found very efficiently. The bidirectional beam tracing algorithm combines sets of beams traced from pairs of avatar locations to find rever...
Thomas A. Funkhouser, Patrick Min, Ingrid Carlbom
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Where SIGGRAPH
Authors Thomas A. Funkhouser, Patrick Min, Ingrid Carlbom
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