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厅堂中总声压级的修正计算
引用本文:蒋国荣,王季卿.厅堂中总声压级的修正计算[J].应用声学,1998,17(6):25-28.
作者姓名:蒋国荣  王季卿
作者单位:同济大学声学研究所!上海,200092,同济大学声学研究所!上海,200092
摘    要:完全扩散声场中的总声压级计算公式是假设混响声能在厅堂中的分布各处相等,与接收点的位置无关,实测发现该公式的计算值偏高,特别当接收点在临界距离以外时,本文提出了一个总声压级计算的修正公式,它与实测及计算机模拟的值符合较好。

关 键 词:室内声学  声场修正计算  大厅设计  总声压级

A revised prediction of the total sound pressure level in an auditorium
Jiang Guorong and Wang Jiqing.A revised prediction of the total sound pressure level in an auditorium[J].Applied Acoustics,1998,17(6):25-28.
Authors:Jiang Guorong and Wang Jiqing
Institution:Institute of Acoustics, Tongii University Shanghai 200092;Institute of Acoustics, Tongii University Shanghai 200092
Abstract:The classical expression for the total sound level distribution in an auditorium over-estimates the reverberant energy, which is assumed to be a constant to all receiving points beyond the critical distance in the auditorium. It was found that the predicted values have wide divergence compared with the field measurements, especially when the receivers are far away from the sound source. A revised expression is presented in this paper and the predicted vaues quite agree with the measured and the computer simulated results as well.
Keywords:Room acoustics  Sound field revised prediction  Auditorium design
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