声场的计算机模拟

本文首先评述两种主要的计算机模拟方法:Monte Carlo法和声线法;然后用本文发展的扩散反射声线法研究房间形状、吸声器分布以及吸声系数对混响的影响;最后以一个模拟教室为例,计算其混响时间,前80ms反射声的方向分布等声场参数,说明计算机模拟在房间声学中的应用。

COMPUTER STUDIES OF SOUND FIELDS

In this paper two major methods of simulation of sound fields are commented on: Monte Carlo method and ray-tracing technique; Then the investigation into the infleunce of the geometry of rooms, the distribution of absorbers and the absorption coefficient itself on the reverberation in a room is simulated and discussed by use of the method developed in this paper; finally, as an example the reverberation time and the directional distribution of early reflected sound energy between 0-80 ms are calculated, demonstrating the utility of computer simulation in room acoustics.