Precomputed acceleration noise for improved rigid-body sound

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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Index Terms

• Applied computing

  • Arts and humanities

    • Sound and music computing

• Computing methodologies

  • Computer graphics

    • Animation

      • Physical simulation

    • Shape modeling

  • Modeling and simulation

    • Simulation types and techniques

      • Simulation by animation

• Information systems

  • Information retrieval

    • Specialized information retrieval

      • Multimedia and multimodal retrieval

        • Music retrieval

• Mathematics of computing

  • Continuous mathematics

    • Topology

      • Geometric topology