Influence of contextual factors on soundscape in urban open spaces
Influence of contextual factors on soundscape in urban open spaces
复制标题
环境因素对城市开放空间声景的影响
DOI：
10.3390/app8122524
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Jian Kang
中科院分区：
文献类型：
--
作者：
Xiaolong Zhao;Shilun Zhang;Qi Meng;Jian Kang
城市开放空间的声环境对使用者起着至关重要的作用。以两条典型商业步行街为研究对象，分析了店铺营业时间、季节、商业功能等环境因素对声景观的不同影响。以下观察结果基于一系列测量，包括人群测量、声环境测量和问卷调查。第一，在相同的人群密度下，中央大街的说话人数多于宽巷的说话人数，而声压级没有显著差异。随着人群密度的增加，宽巷的声舒适度呈下降趋势，而中央大街的声舒适度呈抛物线状。第二，夏季和冬季的谈话者数量没有显著差异;但是，当人群密度增加0.1人/m2时，声压水平在冬季增加1.3 dBA，在夏季增加2.2 dBA。声学舒适度呈抛物线状，在冬季和夏季都是先增加后减少。在商业功能方面，随着人群密度的增加，三个不同商业功能区的谈话人数和声压级均增加，而声舒适度降低。此外，使用交叉标签分析来讨论说话者的数量和声压水平之间的关系，发现它是积极的。
The acoustic environment in urban open spaces has played a key role for users. This study analyzed the different effects of contextual factors, including shop openness, season, and commercial function, on the soundscape in two typical commercial pedestrian streets. The following observations were based on a series of measurements, including crowd measurements, acoustic environment measurements, and a questionnaire survey. First, the number of talkers in Central Avenue was greater than the number of talkers in Kuan Alley in cases with the same crowd density, while there was no significant difference in the sound pressure level. When the crowd density increased, acoustic comfort trended downward in Kuan Alley, while the value of acoustic comfort in Central Avenue took a parabolic shape. Second, there was no significant difference between the number of talkers in summer and the number of talkers in winter; however, when crowd density increased by 0.1 persons/m2, the level of sound pressure increased by 1.3 dBA in winter and 2.2 dBA in summer. Acoustic comfort took a parabolic shape that first increased and then decreased in both winter and summer. Regarding commercial function, as the crowd density increased, the number of talkers and the level of sound pressure both increased, while acoustic comfort decreased in three zones with different commercial functions. In addition, a cross-tab analysis was used to discuss the relationship between the number of talkers and the level of sound pressure, and it was found to be positive.