A LINK BETWEEN STRUCTURAL RESONANCE AND ROOM ACOUSTICS

被引：0
|
作者：
GROOTENHUIS, P
机构：
[1] Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, London
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 1991年 / 205卷 / 01期
关键词：
D O I：
10.1243/PIME_PROC_1991_205_089_02
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The amplification at resonance of a vibrating structure is dependent upon the damping which can be specified by the Q-factor. A link has been established between structural resonance and room acoustics by the derivation of an equivalent Q-factor for a standing wave in a room. The link has been obtained by equating the decay rate for free structural vibration with the rate of decay for a standing wave based on the reverberation time of the room. The analysis has been simplified by limiting the frequency range to below 500 Hz and by taking only a low to medium value for the sound absorption coefficient for the room. An example of the application of the concept of an equivalent Q-factor has been given by estimating the time required to build up a standing wave in a room compared with the duration for a train to pass.
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页码：35 / 37
页数：3
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