Identification of Noise Sources and Its Contribution in Noise Level at Different Area of Allahabad City

ABSTRACT

Noise pollution now not needs any introduction. It is well established fact that noise had entered silently in our daily life and we all are victims. Noise can harm us in more ways than we can think of and at time without us knowing about it. The effects of noise on health are often misunderstood, not noticed or unrecognized. Lots many study had been conducted in past years to understand the level of noise and the way it creating harm to living lives. However very little consideration has been given to identify the sources of noise at urban areas and as a total noise level how much contribution each source has. This study was conducted at Allahabad and 10 major areas were selected for the purpose.10 different locations viz; Civil Lines Rambagh Shiats University Bhairahna Naini Zero road bus station Bus station Civil lines, Railway Station, Chowk and Katra were selected as a representative of different zones. These areas been survey for the different sources and than categories under 8 main categories viz; Train (TR), Road traffic (TF), Loudspeaker (LS), Vehicle horn (VH), Aeroplane (AP), Radio/ TV (RA/TV), Instruments/ appliances (IM), Speech loudness (SL). A questionnaire is prepared and subjected were asked to give the number 1 to 8 as per his opinion as a source of noise in that area.Our estimations states that in core areas of different selected site traffic noise is the most contributing factor (39%) followed by noise due to different type of appliances including generator, radio, TV and others with (23%). Next significant contributor for ambient noise is loudspeaker with (14%). However train noise (10%) and speech loudness (11%) are area specific. And for the inner zone of the selected sites, major source of noise were traffic (36%) followed by appliances noise (29%). This suggested in comparison of core zone there is less difference between the traffic contribution and instrument contribution. And noise due to different instruments prevails in inner zones. Third largest contributor is loudspeakers (13%) followed by loudness in speech (11%) for communication purpose.

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