Analytic ray curve tracing for outdoor sound propagation

被引：12

作者：

Mo, Qi ^{[1
]}

Yeh, Hengchin ^{[1
]}

Lin, Ming ^{[1
]}

Manocha, Dinesh ^{[1
]}

机构：

[1] Univ N Carolina, Dept Comp Sci, Chapel Hill, NC USA

来源：

APPLIED ACOUSTICS | 2016年 / 104卷

基金：

美国国家科学基金会;

关键词：

Ray tracing; Sound propagation; Atmospheric acoustics; Underwater acoustics; LINE MATRIX-METHOD; MODEL; SIMULATION; MEDIA;

D O I：

10.1016/j.apacoust.2015.10.011

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Outdoor sound propagation, which propagates sound through inhomogeneous, moving media with complex obstacles, presents challenging scenarios for computational simulation. In this paper, we present a ray-tracing method that uses analytic ray curves as tracing primitives in order to improve the efficiency of outdoor sound propagation in fully general settings. This ray-curve tracer inherits the efficiency and flexibility of rectilinear ray tracers in handling boundary surfaces, and it overcomes the performance limitations imposed by approximating the curved propagation paths in inhomogeneous media with rectilinear rays. Adaptive media traversal, as well as acceleration structures for surfaces intersections, lead to further savings in computation. Our method's speedup over existing ray models, at least an order of magnitude for simple 2D scenarios and up to two orders of magnitude for 3D complex scenes, is demonstrated on outdoor benchmark scenes. (c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：142 / 151

页数：10

共 52 条

[1] IMAGE METHOD FOR EFFICIENTLY SIMULATING SMALL-ROOM ACOUSTICS [J].