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Noise Pollution at Major Schools, Colleges and Hospitals in Small Urban Area:Focusing on Jessore Municipality, Bangladesh
The study reports the level of traffic-induced noise pollution in the major schools, colleges and hospitals of the Jessore city of Bangladesh. The noise levels have been measured at 14 locations of the city from 7am to 7pm in the working days. The findings also indicated that traffic noise levels depend on distance from roadside and diurnal variation. Motorized traffic is the main source of noise pollution in this city. The study found that the most noise-polluted institution in the city was Mentor International School with measured Leq of 80.37 dB and the least noise polluted institution in the city was Ad-din hospital with measured Leq of 64.09 dB. The L10 levels in all the institutions were higher than 75.62 dB and L90 level was higher than 58.51 dB and there is a strong positive correlation between L10 and L90 level. Findings also indicate that in all of the institutions the TNI level was higher than 96.94 dB and the NC level was higher than 22.2 dB and also there is a strong positive relationship between TNI and NC. When the NC level increases then the TNI level also increases. It has been observed that at all the locations, the level of noise remains far above the acceptable limit for all the time.
Keywords
Noise, L10, L90 Level, Traffic Noise, Annoyance Responses Noise, Climate (NC), Traffic Noise Index (TNI).
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