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Precomputed Acceleration Noise for Improved Rigid-Body Sound

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Published on Jul 31, 2013

This video is from the SCA 2012 paper entiled "Precomputed Acceleration Noise for Improved Rigid-Body Sound" by Chadwick, Zheng, and James

http://www.cs.cornell.edu/projects/So...

Abstract:
We introduce an efficient method for synthesizing acceleration noise - sound produced when an object experiences abrupt rigid-body acceleration due to collisions or other contact events. We approach this in two main steps. First, we estimate continuous contact force profiles from rigid-body impulses using a simple model based on Hertz contact theory. Next, we compute solutions to the acoustic wave equation due to short acceleration pulses in each rigid-body degree of freedom. We introduce an efficient representation for these solutions - Precomputed Acceleration Noise - which allows us to accurately estimate sound due to arbitrary rigid-body accelerations. We find that the addition of acceleration noise significantly complements the standard modal sound algorithm, especially for small objects.

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