耦合空间的声学研究进展

Advances of room-acoustic research in coupled-rooms

近年来由于混响室在演艺厅堂工程上的应用,唤发了对耦合空间声场研究的广泛兴趣。本文简短地回顾了马大猷先生对室内声学简正模态理论的贡献,对近代特别是最近15年来室内声学研究在耦合空间方面的发展,做了综述性讨论,包括简正模态分析和模态分解法、统计声学方法、几何声学方法、扩散方程、以及高分辨率实验技术和贝叶斯概率分析在耦合空间研究的应用。值马大猷先生诞辰一百周年之际,以此文缅怀德高望重的声学前辈。

Recent application of coupled reverberation chambers in performing arts venues has prompted active research on sound fields in coupled rooms. After a historical briefing, this paper reviews advances of the room-acoustic research in coupled-rooms, including wave-theorybased modal analysis and modal expansion method, statistical room-acoustic, geometrical room-acoustic approaches, and particularly a diffusion equation-based approach. Acoustical scale-modeling- based experimental tools developed with high spatial resolution automatic scanning capabilities, and advanced Bayesian energy decay analysis applied in room-acoustic research for coupled-rooms are also reviewed This paper is dedicated to the memorial issue of the centennial celebration of late Professor Maa Dah-you.