Interactive sound propagation for dynamic scenes using 2D wave simulation

We present a technique to model wave‐based sound propagation to complement visual animation in fully dynamic scenes. We employ 2D wave simulation that captures geometry‐based diffraction effects such as obstruction, reverberation, and directivity of perceptually‐salient initial sound at the source a...

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Bibliographic Details
Published in:Computer graphics forum Vol. 39; no. 8; pp. 39 - 46
Main Authors: Rosen, Matthew, Godin, Keith W., Raghuvanshi, Nikunj
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.12.2020
Subjects:
Acoustics
Animation
Applied computing → Sound and music computing
CCS Concepts
Computing methodologies → Physical simulation
Directivity
Propagation
Reciprocity
Simulation
Solvers
Sound propagation
Two dimensional models
Virtual reality
Wave diffraction
Wave propagation
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:We present a technique to model wave‐based sound propagation to complement visual animation in fully dynamic scenes. We employ 2D wave simulation that captures geometry‐based diffraction effects such as obstruction, reverberation, and directivity of perceptually‐salient initial sound at the source and listener. We show real‐time performance on a single CPU core on modestly‐sized scenes that are nevertheless topologically complex. Our key ideas are to exploit reciprocity and use a perceptual encoding and rendering framework. These allow the use of low‐frequency finite‐difference simulations on static scene snapshots. Our results show plausible audio variation that remains robust to motion and geometry changes. We suggest that wave solvers can be a practical approach to real‐time dynamic acoustics. We share the complete C++ code of our “Planeverb” system.
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.14099