Simulating acoustic propagation using a lattice Boltzmann model of incompressible fluid flow

Authors:
Nathan Fraser;Richard Hall
Affiliations:
Dept. Computer Science & Engineering, La Trobe University, Melbourne, Victoria, Australia;Dept. Computer Science & Engineering, La Trobe University, Melbourne, Victoria, Australia
Venue:
AMTA'06 Proceedings of the 7th WSEAS International Conference on Acoustics & Music: Theory & Applications
Year:
2006

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Abstract

Waveguide mesh models that simulate airborne acoustics require extra non-physical rules to accurately represent acoustic propagation collisions with objects. In this paper we describe a physics-based cellula automata of fluid flow phenomena which simulates acoustic as a by-product, in which such rules are unnecessary. We evaluate our simulation with respect to sound speed and boundary interactions. Applications include audio signal processing and computer generated sound.