A Radiosity Model for Sound Decay in Coupled Rooms
The acoustical radiosity method, which assumes diffusely reflecting boundaries, has recently been developed to predict the sound fields in single-volume rooms. This research aims at the performance of this method in coupled rooms, and proposes an improved model based on acoustical radiosity to predict the sound decays in a system of two coupled rooms. In the proposed model,the coupling aperture is considered as two virtual surfaces and the radiosity on these surfaces is employed to implement the sound energy transmission between two subrooms. Therefore, the radiosity can be computed individually in each subsroom, and the computation cost is significantly reduced. Moreover, the proposed model avoids errors from visibility detecting for elements in different subrooms. The predictions of sound decays have satisfactory convergence and agree well with those obtained by measurements.
acoustical radiosity coupled rooms sound decay sound field modeling
蒋国荣 张晓岚
同济大学,声学研究所,上海,200092
国际会议
The 3rd International Symposium on Temporal Design(第三届时间性设计国际研讨会)
广州
英文
28-31
2007-11-02（万方平台首次上网日期，不代表论文的发表时间）