室内指向性声源的声场数值模拟  

On the numerical simulation of acoustical field in rooms with directional sources

作　　者：曾向阳[1] 陈克安[1] 

机构地区：[1]西北工业大学航海工程学院,西安710072

出　　处：《声学技术》2001年第2期68-70,共3页Technical Acoustics

基　　金：国家自然科学基金!资助 ;西北工业大学博士创新基金!资助

摘　　要：为了利用计算机对室内指向性声源的声场进行模拟 ,文中将声线跟踪法、虚源法和MonteCarlo法相结合 ,编制了一种声场数值模拟仿真程序。该程序能模拟有 (或无 )指向性声源在室内给定点的声压级等参数值 ,还能计算出该点的脉冲响应函数。作为例子 ,分别利用该法和声压叠加法研究了点源和偶极子声源的指向性。In this paper, an algorithm which combines the ray tracing method,the image method and the Monte Carlo method is designed to calculate the acoustical field in rooms with directional sources. A corresponding computer program is designed and some parameters,such as the pressure level and the impulse response,can be calculated by the program . In the two examples ,the pressure levels are calculated and the results are compared with those calculated by the sound pressure superposition method.

关 键 词：室内声场 指向性声源 数值模拟 计算机模拟 声压叠加法 点源 偶极子声源 仿真程序 

分 类 号：TU112.2[建筑科学—建筑理论] TB525[理学—物理]