Improved Water Sound Synthesis using Coupled Bubbles
- Stanford University, Stanford, United States of America; OSTI
- Stanford University, Stanford, United States of America
- Adobe Research, Seattle, United States of America
We introduce a practical framework for synthesizing bubble-based water sounds that captures the rich inter-bubble coupling effects responsible for low-frequency acoustic emissions from bubble clouds. We propose coupled-bubble oscillator models with regularized singularities, and techniques to reduce the computational cost of time stepping with dense, time-varying mass matrices. Airborne acoustic emissions are estimated using finite-difference time-domain (FDTD) methods. We propose a simple, analytical surface-acceleration model, and a sample-and-hold GPU wavesolver that is simple and faster than prior CPU wavesolvers.
Sound synthesis results are demonstrated using bubbly flows from incompressible, two-phase simulations, as well as procedurally generated examples using single-phase FLIP fluid animations. Our results demonstrate sound simulations with hundreds of thousands of bubbles, and perceptually significant frequency transformations with fuller low-frequency content.
- Research Organization:
- Stanford Univ., CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- NA0003968
- OSTI ID:
- 2417963
- Journal Information:
- ACM Transaction on Graphics, Journal Name: ACM Transaction on Graphics Journal Issue: 4 Vol. 42; ISSN 0730-0301
- Publisher:
- Association for Computing Machinery (ACM)
- Country of Publication:
- United States
- Language:
- English
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