Noise pollution (or environmental noise) is displeasing human or machine created sound that disrupts the activity or happiness of human or animal life. A common form of noise pollution is from transportation, principally motor vehicles.
The source of most noise worldwide is transportation systems, motor vehicle noise, but also including aircraft noise and rail noise.
Poor urban planning may give rise to noise pollution, since side-by-side industrial and residential buildings can result in noise pollution in the residential area.
Other sources are office equipment, factory machinery, construction work, appliances, power tools, lighting hum and audio entertainment systems.
Noise from recreational vehicles has become a problem.
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