The main causes of noise pollution are: (1) Through the shrill and loud noise of the running machines in the factorics:
(2) The noise by the vehicles and their horns:
( 3 ) By the loud sound (noise) in cinemas, radio, television and loudspeakers:
( 4 ) By the roar of jet planes and the fighter planes:
( 5 ) By the shrill sound of the sirens of the firefighters:
( 6 ) By the loudspeakers played during social and religious occasions, bands, drums (dhol and nagara), sounds by a D.J., etc;
(7) By the fireworks done at the time of festivals and inaugurations:
(8) By the loudspeakers played during public events, election rallies, advertises, etc:
(9) The noise pollution is spread due to the sounds of breakage in the factories, pattering and rubbing sounds.