Urban Noise in a Metropolitan Towns

• 作者: Lakavath Ravinder Mesfin Getahun Belachew
• 来源期刊: 声学期刊(英文)
• 学科: 医学
• 关键词: Noise Pollution Noise Effects Noise Control SPSS PACKAGE ANOVA Technique SOUND Pressure Level Decibel-Sound SOUND When A-Weighted
• 年，卷（期）: 2014,（4）
• 页码范围: 163-176
• 页数: 14页
• 分类号: R73

摘要

This study is aimed at bringing out the salient aspects of urban noise and its study and control aspects, at different location of a metropolitans town. Field measurements at different points of times a day have also been recorded at a number of high-traffic-intensity locations on main roads of towns. The data obtained are analyzed using SPSS package for calculation through ANOVA technique and the findings of these studies have been recorded. The variation of SPL considering the time of the day has been studied and illustrated through graphical plots. It shows that the peak early morning max sound pressure levels observed over the recommended limiting value. In some places, the low frequency noise predominates in the early morning hours, noise levels are significant among and within the 15 groups. The variation of sound pressure (Maximum, Minimum and L equivalent readings) levels as shown in the graphical plots, the Maximum and L equivalent levels exceeded the recommended noise level. Important conclusions of this work have been drawn subsequently.