The causes of noise pollution
sound than necessary to cause adverse effects on the health of people from various sources, many important. : (Siriporn. The Indus Valley. 2534: 222-223)
1.Transportation. The use of motorcycle, tricycle, cars, trucks and airplanes, more make the volume is increasing as well. May be classified as follows: to see
.Motorcycle, tricycle (took) have the Volume 35 dB
car audio level 60 - 25 dB
trucks have the volume 95 - 120 dB
trains running away 100 feet. Sound level 60 dB
planes have the volume 100 - 140 dB
.Office of the office of national environment. Determined the volume in a residential neighborhood in the daytime and night, no more than 60 เดซิเบลและ 55 dB, respectively. For the volume.Due to the engine or any part of the car. Motorcycles in normal than 95 decibels. When measuring the volume with a sound level meter in distance 7.5 meters surrounding the
2.Factories. Sound is caused by the operation of machinery of various sizes, which makes the volume is different from 60 dB until 120 decibels. Depending on the magnitude of machinery. The material used to make the wall or ceiling factory.3. From household sound caused by tools, home appliances, such as cutting machine view trade sucker of dust scrubber radio And TV cause volume about 60 - 70 dB
4.The noise resulting from other causes, including advertising, thunder and lightning, and the quarrel, brawl.
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