论文部分内容阅读
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,所述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。
The calculation of impulse response is an important task in closed-space sound field simulation. Aiming at the characteristics of each part of impulse response, the traditional method of simulating the impulse response using only one kind of model is changed. By combining the ray tracing method, the virtual source method and the statistical method, the impulse response is simulated by the section simulation. In the process of algorithm design, both diffuse reflection and specular reflection are considered, and the calculation method of “reverberation tail” and the specific way to improve computational efficiency are studied. Simulation results show that the proposed method can effectively improve computational efficiency under the premise of ensuring a certain accuracy.