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Efficient Numerical Simulation of Sound Propagation

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Published on Nov 9, 2009

We present a technique which relies on an adaptive rectangular decomposition of a three-dimensional scene to enable efficient and accurate simulation of sound propagation in complex virtual environments. It exploits the known analytical solution of the Wave Equation in rectangular domains and is thus able to achieve at least an order of magnitude performance gain compared to a standard FDTD implementation, while also being memory-efficient. Consequently, we are able to perform accurate numerical acoustic simulation on large, complex scenes in the kilohertz range which, to the best of our knowledge, has not been previously attempted on a desktop computer. This work offers accelerated computation of accurate sound propagation for large scenes on commodity hardware, enabling realistic auditory display for virtual environments and accurate acoustics analysis for architectural design [Nikunj Raghuvanshi, Rahul Narain, Nico Galoppo, and Ming C. Lin].

http://gamma.cs.unc.edu/propagation/

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