【作者】 曾向阳； 陈克安； 孙进才；

【Author】 Zeng Xiangyang , Chen Ke’an , Sun Jincai(Institute of Environmental Engineering, Northwestern Polytechnical University, Xi’an 710072)

【机构】 西北工业大学19号信箱；

【摘要】 依据几何声学原理,研制了一个既适用于扩散声场模拟,又适用于非扩散场模拟的声束跟踪算法,利用该算法研究了室内声场的空间分布特性。仿真结果表明:矩形空间中,本算法的模拟结果与用Sabine理论计算的结果相符;而对于非扩散场或非矩形空间情况,本文的这种数值模拟算法是较经典Sabine理论更为适用和有效的分析方法。更多还原

【Abstract】 A beam tracing program which can be used to model not only a fully-diffused sound field but also a non-diffused field has been designed based on the geometric acoustics. In this paper, the program is used to simulate the characteristics of the spatial distribution of the sound and is compared with that computed by the typical Sabine theory. The simulation results show that the algorithm has provided us with an efficient way for the analysis of sound fieids in rooms on condition that the source frequency is high enough.更多还原