An efficient GPU-based time domain solver for the acoustic wave equation

作     者：Mehra, Ravish Raghuvanshi, Nikunj Savioja, Lauri Lin, Ming C. Manocha, Dinesh 

作者机构：Univ N Carolina Dept Comp Sci Chapel Hill NC 27599 USA Microsoft Res Redmond WA 98052 USA Aalto Univ Sch Sci & Technol Dept Comp Sci FIN-02015 Espoo Finland 

出 版 物：《APPLIED ACOUSTICS》 (应用声学)

年 卷 期：2012年第73卷第2期

页      面：83-94页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：ARO [W911NF-10-1-0506] NSF [0917040, 0904990, 1000579] RDECOM [WR91CRB-08-C-0137] Direct For Computer & Info Scie & Enginr Div Of Information & Intelligent Systems Funding Source: National Science Foundation 

主　　题：Time-domain wave equation solver Room acoustics GPU-based algorithms 

摘      要：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 parallel processing capabilities of graphics processors (GPUs), significant improvement in performance is gained compared to the corresponding CPU-based solver, while maintaining the numerical accuracy. Substantial performance gain over a high-order finite-difference time-domain method is observed. Using this technique, a 1 s long simulation can be performed on scenes of air volume 7500 m(3) till 1650 Hz within 18 min compared to the corresponding CPU-based solver that takes around 5 h and a high-order finite-difference time-domain solver that could take up to three weeks on a desktop computer. To the best of the authors knowledge, this is the fastest time-domain solver for modeling the room acoustics of large, complex-shaped 3D scenes that generates accurate results for both auralization and visualization. (C) 2011 Elsevier Ltd. All rights reserved.