Development of a Delayed Coupled Room Model for the Prediction of the Performance of Early Energy Decay in Churches
To study the performance of early energy decay in churches, acoustical measurements under an impulse excitation were conducted in a Protestant church and a Catholic church in Hong Kong. The results show that the coupling effect is more prominent than the effect of the source-receiver distance in Barrons model. Moreover, a delayed coupled-room model was developed. It introduces geometrical acoustics into statistical acoustics to verify a diffused sound field condition, and modifies the initial condition in the impulse duration by introducing a delayed time interval for sound propagated from the source to achieve diffuse sound fields in each subspace. The predicted results of the coupled room model agree well with the measured ones.
early energy decay performance delayed coupled room model impulse excitation response
褚轶景 麦卓明
香港理工大学,屋宇设备工程系,香港,九龙,红磡;南京大学,声学所近代声学重点实验室,江苏,南京,210093 香港理工大学,屋宇设备工程系,香港,九龙,红磡
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
25-27
2007-11-02（万方平台首次上网日期，不代表论文的发表时间）