声场脉冲响应的分段模拟方法

计算脉冲响应是封闭空间声场模拟技术的重要工作。针对脉冲响应各部分的特点，改变仅利用某一种模型模拟整个脉冲响应的传统做法，把声线跟踪法、虚源法和统计学方法结合起来，对脉冲响应进行分段模拟研究。算法设计过程中，对扩散反射和镜面反射都作了考虑，并研究了“混响尾巴”的计算方法以及提高计算效率的具体途径。仿真实践表明，所棕方法能在保证一定精度的前提下使计算效率得到有效提高。

Method for Dividual Simulation of Impulse Response of Acoustic Field

In order to calculate the impulse response in a room more efficiently and more exactly,a hybrid method is used to simulate the impulse response dividually according to the various accuracy requirements of its different parts.The phenomenon of diffuse reflection is also considered in our computer program.And several important problems such as the compensation for the reverberation tail and improving the efficiency of computation are also discussed.The sim-ulation results show that both the accuracy and the efficiency have been improved by using the hybrid method.[