Noise pollution A state that produces the sound with interference. May come from the sound source. Both from human,Of animals or machines by, if more than 85 dB will harm the ears, if more than 90 dB will harm the ears greatly. So should not be close to the noisy hard
.The external sound sources around the world, mainly from the construction and transportation systems, including noise from vehicles, automotivePlane and train [] [] 1 2 or even bad urban planning may cause noise pollution has as well. And the industry source side.
noise pollution, both within and outside the building has many kinds, such as the alarm of the car, the siren signal emergency, mechanical equipment, firework,. Compressed air drill horn, road, dogs barking, electronics, light and sound show.Entertainment system, electric loudspeaker and shouting from the humans.
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