基于PVM的并行辐射度声学仿真算法

Parallel Radiosity Algorithm of Acoustics Simulation Based on PVM

针对建筑环境的复杂性及建筑声学仿真的实时性要求,提出用并行辐射度算法求解整个声场的声能,计算单位脉冲响应,并启用多处理机将频率分段求解,进而得到全频段的脉冲响应.在此基础上,对并行算法复杂度进行分析,同时对一个室内声场进行模拟,验证了算法的有效性,并给出并行算法加速比特性曲线.理论分析与实验均表明,采用并行算法可以有效提高复杂场景声学仿真的效率.

In this paper, parallel radiosity algorithm was developed and used to simulate the sound energy distribution and pulse response for a narrow frequency segment to adapt the requirement of complexity and real-time in architecture. Moreover, the pulse response for whole interesting frequency domain was obtained with multi-processor to process each frequency segment. Based on this, the complexity of parallel algorithm was analyzed. An auditorium acoustics field was simulated to verify the validity of parallel algorithm,and the speedup rate was obtained. The numerical experiment shows that the efficiency of acoustics simulation in the complex scene will be increased when parallel algorithm is adopted.