3D noise mapping for preselected locations of urban area with and without noise barriers: A case study of Delhi, India

IF 1.7 Q2 ACOUSTICS

Noise Mapping Pub Date : 2020-01-01 DOI:10.1515/noise-2020-0006

Pervez Alam, K. Ahmad, S. Afsar, Nasim Akhtar

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引用次数: 6

Abstract

Abstract Noise pollution has been rising as a critical issue in recent days particularly for the people living in urban areas. This study has been conducted to find out the effects of traffic induced noise on nearby residential building through 3D noise mapping with and without noise Barriers. Monitoring has been carried out at various densely populated preselected locations of Delhi, India. Thereafter, 3D noise mapping has been done using hourly average noise levels for the locations exposed with maximum noise. The developed 3D noise map shows the variation of noise level along X, Y and Z direction for all selected locations before and after installation of noise barriers. Moreover, the result also shows that exact assessment of noise impact is possible through 3D noise mapping, when a multistory building close to the source of noise is taken into consideration. This paper also elaborates the adequate height, distance and NRC value of noise barrier to reduce the effect of road traffic noise on nearby high rise building. Reduction pattern of noise level can easily be visualized and evaluated by using these maps. This type of study could support decision makers during adaptation of suitable remedial measures.

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有和没有隔音屏障的城市区域预选位置的3D噪音地图：以印度德里为例

近年来，噪音污染日益严重，尤其是对城市居民来说。本研究通过有隔音屏障和无隔音屏障的三维噪音测绘，探讨交通噪音对附近居民楼的影响。在印度德里的人口密集的预先选定地点进行了监测。此后，使用每小时平均噪音水平对噪音最大的暴露地点进行了3D噪音测绘。绘制的三维噪声图显示了所有选定地点在安装隔音屏障前后沿X、Y和Z方向的噪声水平变化情况。此外，研究结果还表明，当考虑到靠近噪声源的多层建筑时，通过三维噪声映射可以准确评估噪声影响。本文还阐述了噪声屏障的适当高度、距离和NRC值，以减少道路交通噪声对附近高层建筑的影响。利用这些图可以很容易地可视化和评估噪声水平的降低模式。这种类型的研究可以支持决策者在适应适当的补救措施。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Noise Mapping ACOUSTICS-

CiteScore

7.80

自引率

17.90%

发文量

审稿时长

12 weeks

期刊介绍： Ever since its inception, Noise Mapping has been offering fast and comprehensive peer-review, while featuring prominent researchers among its Advisory Board. As a result, the journal is set to acquire a growing reputation as the main publication in the field of noise mapping, thus leading to a significant Impact Factor. The journal aims to promote and disseminate knowledge on noise mapping through the publication of high quality peer-reviewed papers focusing on the following aspects: noise mapping and noise action plans: case studies; models and algorithms for source characterization and outdoor sound propagation: proposals, applications, comparisons, round robin tests; local, national and international policies and good practices for noise mapping, planning, management and control; evaluation of noise mitigation actions; evaluation of environmental noise exposure; actions and communications to increase public awareness of environmental noise issues; outdoor soundscape studies and mapping; classification, evaluation and preservation of quiet areas.