时域有限差分法在建筑声学中的应用及前景

介绍了声波方程的基本差分格式及稳定条件、数值色散、吸收边界条件等数值计算理论，例举了前人用时域有限差分法对噪声传播过程的模拟和室内声学中座椅吸声低谷效应模拟的模拟结果。本文指出，由于时域有限差分法的特点使其具有在模拟脉冲响应方而的特别优势，因而，应用这一技术研究厅堂的声学特性，尤其是低频特性，将有重要意义。

Application and prospect of the finite-difference time-domain method in architecture acoustics

The theory of acoustic finite-difference equations and its stability condition, numerical error and absorbing boundary condition are discussed. The process and results of modeling of noise propagation and that of the seat dip effect using finite-difference timedomain method are quoted from early works. This paper pointed out that it is advantageous to study the problems of room acoustics by using the finite-difference time-domain method, especially the in low-frequency range, because of the advantage in modeling impulse response.