An experimental scaled‐model for coupled volumes with an automated high‐spatial‐resolution scanning system.

作     者：Joonhee Lee Craig Schaefer Ning Xiang 

作者机构：Graduate Program in Architectural Acoust. School of Architecture Rensselaer Polytechnic Inst. Troy New York 12180 gi20plus@*** 

出 版 物：《The Journal of the Acoustical Society of America》 

年 卷 期：2010年第127卷第3_SUPPLEMENT期

页      面：2002-2002页

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

摘      要：This paper presents an experimental study of low‐frequency behavior in coupled volumes. In order to examine low‐frequency behavior in coupled volumes, an eighth‐scale model of two coupled volumes with an automated high‐spatial‐resolution scanning system has been developed. The validated scanning system makes it possible to acquire thousands of room impulse responses on a designated planar grid with a fine grid size in the scaled model. The high‐spatial‐resolution scanning results are used to investigate the characteristics of acoustic wave propagation in both single‐space and coupled‐volume systems. This paper discusses some design issues relevant to high‐quality, high‐spatial resolution scanning, to diffusely reflecting interior surfaces, and to variable coupling aperture sizes. Some representative scanning results of sound pressure propagations and sound energy flows will also be demonstrated.