Noise Pollution : Meaning , Causes , Effects and Control Measures
It is also a very effective alarm system. Noise can be defined as an unpleasant and unwanted sound.
Exposure to loud noise is indeed annoying and harmful too. Its effects are more directly on the receiver i.
Noise pollution is the result of modern industrialized urban life and congestion due to over population. Even though noise pollution is not fatal to human life, yet its importance cannot be overlooked because repeated exposure to noise reduces the sleeping hours and productivity or efficiency of a human being. It affects the peace of mind and invades the privacy of a human being.
Textile mills, printing presses, engineering establishments and metal works etc. In industrial cities like Kolkata, Ludhiana, Kanpur etc.
Automobile revolution in urban centers has proved to be a big source of noise pollution. Increasing traffic has given rise to traffic jams in congested areas where the repeated hooting of horns by impatient drivers pierce the ears of all road users.
Airport situated in the vicinity of population centres and the air planes pass over residential areas. Heavy trucks, buses trains, jet-planes, motor-cycles, scooters, mopeds, jeeps—the list of vehicles is endless but the outcome is same — noise pollution.
The household is an industry in itself and is a source of many indoor noises such as the banging of doors, noise of playing children, crying of infants, moving of furniture, loud conversation of the inhabitants etc. Besides these are the entertainment equipment in the house, namely the radio, record-players and television sets. Domestic gadgets like the mixer-grinders, pressure cookers, desert coolers, air- conditioners, exhaust fans, vacuum cleaners, sewing and washing machines are all indoor sources of noise pollution.
In India people need only the slightest of an excuse for using loud speakers.
Tractors, thrashers, harvesters, tube wells, powered tillers etc. Noise level 90 dB to 98 dB due to running of farm machines have been recorded in the state of Punjab.
A lot of noise pollution is added to the atmosphere by artillery, tanks, launching of rockets, explosions, exercising of military airplanes and shooting practices. Screams of jet engines and sonic booms have a deafening impact on the ears and in extreme cases have been known to shatter the window panes and old dilapidated buildings.
The automobile repair shops, construction-works, blasting, bulldozing, stone crushing etc. Noise is generally harmful and a serious health hazard.
The physical manifestation of noise pollution is the effect on hearing ability. Repeated exposure to noise may result in temporary or permanent shifting of the hearing threshold of a person depending upon the level and duration of exposure. The immediate and acute effect of noise pollution is impairment of hearing i.
Human ears have sensory cells for hearing. So, noise is annoying and the annoyance depends on many factors not merely the intensity of the sound but also repetition, because even a sound of small intensity e. Some of the well- known effects of noise on human beings and the relation of noise pollution level and its harmful effects are shown in Table 5.
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Noise Pollution. You must be logged in to post a comment. Leave a Reply Click here to cancel reply. Stress, tension, psychological illness, heart attact effects especially at upper range.