摘要
声波在室内的传播过程是很复杂的，尤其是当室内有许多家具和机器设备时。要经历由上述物体引起的多重散射过程。本文提出的多重随机声散射模型及相应的计算机仿真程序，较全面地描述了声波在室内的复杂散射、反射与吸收，与实测结果相比较，具有良好的精度，能较为精确地预测声能在空间的分布，可用于厂房、办公室等的噪声控制，在室内音质设计实践中也具有广泛的应用前景。
Abstract: A multiple random scattering ray-tracing model is developed for predicting the distribution of sound pressure levels in a three dimensional space of any kinds of rooms. This model considers the reflection and absorption on the surface of each wall and the scattering caused by the objects distributed randomly in the room. The objects therein like machines, furniture, etc. are regarded as obstacles which scatter the sound, so that the sound propagation is shown as a multiple scattering process. Thus the sound pressure level distribution in a diffuse sound field can be calculated more precisely.
出处
《声学学报》
EI
CSCD
北大核心
1997年第5期463-468,共6页
Acta Acustica
基金
国家自然科学基金
关键词
随机声散射模型
计算机仿真
声波传播
Acoustic noise
Acoustic wave scattering
Computer simulation
Mathematical models
Noise pollution control
