Saturday, February 18, 2012

Noise pollution on human health and Sources of Noise or Sound pollution

Sound pollution and pollution due to radioactivity sources. It's consequences including human diseases Sound Pollution Noise pollution is defined as the state of discomfort and restlessness caused to human by unwanted high intensity sound known as noise. ''High pressure sound or high intensity sound termed as 'unwanted sounds is called as noise It causes discomfort to human beings and interfere with their efficiency. Sound levels are measured in decibels (dB). It is a unit for expressing the relative intensity of  sound on a scale from 0-130 dB. In a modern society sound often,annoys. Many sounds are unpleasant or unwanted and this is
classed as noise.
Noise Levels Below Mention with (db) 
Sound Sources Decibels(dB)
    • Thershold Hearing 0
    • Normal Breathing 10
    • Sound of very quite place 20
    • Whisperig 30
    • Sounf of Room and office 40
    • Restaurant or Night traffice noise 50
    • Normal Conversation 60
    • Automobile 80
    • Water fail at base 90
    • Air traffic up to 300 m hight 100-110
Sources of Noise or Sound pollution : The major sources of noise pollution are as follows 
  • Transport Noise: The industrial society depends on mechanical transport for the efficient distribution of people and goods.
  • Road Noise : This mainly comes from cars, buses, lorries, vans and motor bikes These automobiles run over road creates high sound and caused noise or sound pollution.
  •  Rail Noise : Peoples live near to rail tracks, railway station feel the high intensity sound level.
  • Aircraft Noise : This is a major problem to those people who live near a busy commercial or military airport. Research indicates that near a major transportation noise Pollution airport the number of people awakened by airplanes. 
People live close to airport have near with noise levels up to 110 dB. Mumbai has busiest airport in the country The airplanes taking off or landing every three to five minutes.

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