Calculation of impulse responses of rooms by using the finite‐difference method
Calculation of impulse responses of rooms by using the finite‐difference method
复制标题
使用有限差分法计算房间的脉冲响应
DOI：
10.1121/1.417074
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
H. Tachibana
中科院分区：
文献类型：
--
作者：
S. Sakamoto;Y. Tokita;H. Tachibana
作为计算房间内脉冲响应的一种方法，研究了有限差分法（FDM）的应用。本文首先介绍了数值计算的基本原理，然后介绍了数值计算在几种典型形状的二维空间中的应用。为了验证有限差分法计算结果的正确性，将计算结果与缩尺模型试验结果进行了比较。其次，为了将FDM计算方法应用于具有吸收边界的房间，提出了基于机械替代模型和瑞利模型的两种物理模型。为了检验这些模型，数值计算和实验所获得的结果进行了比较。
As a method of calculating impulse responses in a room, the application of the finite‐difference method (FDM) has been investigated. In this paper, the principle of the numerical calculation is introduced first, and its applications for obtaining impulse responses in several two‐dimensional spaces with typical shapes are presented. In order to see the validity of the calculation by FDM, the calculated results are compared to the results obtained in scale model experiments. Next, to apply the FDM calculation method to rooms with absorbing boundaries, two physical models based on the mechanical substitution model and the Rayleigh model are proposed. In order to examine these models, the results obtained by numerical calculation and by experiment are compared.