2012
DOI: 10.1016/j.apacoust.2011.05.012
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An efficient GPU-based time domain solver for the acoustic wave equation

Abstract: An efficient algorithm for time-domain solution of the acoustic wave equation for the purpose of room acoustics is presented. It is based on adaptive rectangular decomposition of the scene and uses analytical solutions within the partitions that rely on spatially invariant speed of sound. This technique is suitable for auralizations and sound field visualizations, even on coarse meshes approaching the Nyquist limit. It is demonstrated that by carefully mapping all components of the algorithm to match the paral… Show more

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Cited by 86 publications
(65 citation statements)
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“…In this section, we present a fast and efficient wave-based sound propagation technique that solves the acoustic wave equation in time-domain, entirely on the GPU [20].…”
Section: Wave-based Sound Propagation In Time-domainmentioning
confidence: 99%
“…In this section, we present a fast and efficient wave-based sound propagation technique that solves the acoustic wave equation in time-domain, entirely on the GPU [20].…”
Section: Wave-based Sound Propagation In Time-domainmentioning
confidence: 99%
“…Ray casting using the GPU from the sound sources perspective into the scene generates a low resolution listener occlusion map which provides an occlusion weighting to the listener for use when passed to the audio engine. Mehra et al (Mehra et al, 2011) carefully map all the components of the domain decomposition algorithm to match the parallel processing capabilities of GPUs to gain considerable speed up compared to the corresponding CPU-based solver, whilst maintaining the same numerical accuracy in the solver.…”
Section: Gpu Accelerated Approachesmentioning
confidence: 99%
“…These methods are relatively simple to implement and they are amenable to parallel computing architectures, such as graphics processing units (GPUs) [10][11][12]. In comparison to wave-based methods employing non-local spectral operators (e.g., [4,6]), finite difference methods-operating locally in space-are more adaptable to impedance boundary truncation over irregular domains, possibly through extensions to finite volume techniques [13,14].…”
Section: Introductionmentioning
confidence: 99%
“…As opposed to geometric (ray-based) methods [1], wave-based methods offer a complete description of room acoustics, at least in theory [2]. Among the various types of wave-based methods available for room acoustics applications (e.g., [3][4][5][6]), finite difference methods that approximate the wave equation over regular grids, or finite difference time domain (FDTD) methods [7][8][9], are popular choices. These methods are relatively simple to implement and they are amenable to parallel computing architectures, such as graphics processing units (GPUs) [10][11][12].…”
Section: Introductionmentioning
confidence: 99%