Analysis of architectural acoustics in oversize waiting halls of elevated stations of high-speed railway

被引：0
|
作者：
Liu, Pei-Jie [1 ]
Zhao, Yue-Zhe [1 ]
Wu, Shuo-Xian [1 ]
机构：
[1] State Key Laboratory of Subtropical Building Science, School of Architecture, South China University of Technology, Guangzhou,Guangdong,510640, China
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2014年 / 42卷 / 10期
关键词：
The newly-built elevated stations of high-speed railway in China have oversize waiting halls; and intensive researches on the architectural acoustics of such oversize volume room are insufficient. In this paper; by taking a waiting hall as an example; room acoustic parameters are analyzed by means of in-situ measurement and computer simulation techniques. The results show that (1) the reverberation time (RT) of the waiting hall are rather long; and the average reverberation time in medium frequency is 9.21 s; which is longer than those in low and high frequencies; (2) in the waiting hall within 500 and 1 000 Hz octave bands; the speech transmission index (STI) is highly relevant to the early decay time (EDT) but is lowly relevant to the RT; (3) enlarging the sound absorption area of surfaces can significantly improve the room acoustic parameters; (4) A weighted sound pressure level is highly relevant to the logarithm value of the source-receiver distance while the RT within 500 and 1 000 Hz octave bands is irrelevant to the source-receiver distance; and (5) within a certain source-receiver distance; the EDT within 500 and 1 000 Hz octave bands; the definition within 500 and 1000 Hz octave bands and the STI are highly relevant to the distance. Besides; the distances between the distributed loudspeaker system in the waiting hall and the passengers should be carefully designed so as to meet the requirement of speech articulation. ©; 2014; South China University of Technology. All right reserved;
D O I：
10.3969/j.issn.1000-565X.2014.10.022
中图分类号：
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页码：138 / 144
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