The influence of crowd density on the sound environment of commercial pedestrian streets
The influence of crowd density on the sound environment of commercial pedestrian streets
复制标题
人群密度对商业步行街声环境的影响
DOI：
10.1016/j.scitotenv.2014.12.060
复制
发表时间：
2015-04-01
影响因子：
9.8
通讯作者：
Kang, Jian
中科院分区：
文献类型：
--
作者：
Meng, Qi;Kang, Jian
商业步行街在中国和欧洲非常普遍，许多位于历史或文化中心。这些街道的环境很重要，包括它们的声音环境。本研究旨在探讨商业步行街人群密度与声环境的关系。在中国哈尔滨的案例研究现场进行现场测量，并进行问卷调查。声压测量结果表明，人群密度对0.05人/m2以下声压的影响不明显，而当人群密度大于0.05人/m2时，声压随人群密度而增加。对声源进行了分析，结果表明，几种典型的声源，如交通噪声，可以被密集人群产生的声音所掩盖。声学分析表明，人群密度在0.10至0.25人/m2的范围之外，表现出较低的声学舒适性评价得分。在视听特性方面，主观响度随着人群密度的增加而增加，而声学舒适度降低。室内地下商业街的结果也进行了比较。(C)2014爱思唯尔有限公司版权所有。
Commercial pedestrian streets are very common in China and Europe, with many situated in historic or cultural centres. The environments of these streets are important, including their sound environments. The objective of this study is to explore the relationships between the crowd density and the sound environments of commercial pedestrian streets. On-site measurements were performed at the case study site in Harbin, China, and a questionnaire was administered. The sound pressure measurements showed that the crowd density has an insignificant effect on sound pressure below 0.05 persons/m(2), whereas when the crowd density is greater than 0.05 persons/m(2), the sound pressure increases with crowd density. The sound sources were analysed, showing that several typical sound sources, such as traffic noise, can be masked by the sounds resulting from dense crowds. The acoustic analysis showed that crowd densities outside the range of 0.10 to 0.25 persons/m(2) exhibited lower acoustic comfort evaluation scores. In terms of audiovisual characteristics, the subjective loudness increases with greater crowd density, while the acoustic comfort decreases. The results for an indoor underground shopping street are also presented for comparison. (C) 2014 Elsevier B.V. All rights reserved.