Noise Pollution
Not all people in this country living in a noisy place, most of them want to lived in a peaceful place with trees and fresh air and we all know that most of the time we can focus and think carefully in a quiet place. Noise Pollution can be defined as unwanted or offensive sound that unreasonably intrude into our daily activities. In urban areas noise pollution is everywhere, whether we like it or not this is part of everyday life. If the ears was irritated to the sound it is called noise. This is defined a form of air pollution that is audible unwanted sound that poses a threat to a person's health and well- being. This pollution has many sources from different things such as air conditioner, traffic ,radio ,a dog barking, human conversation, other machinery that causes sound and are associated with urban developments. According to an OECD report “ Transport is by far the major source of noise , ahead of building or industry , with road traffic the chief offender “ motorcycles , trucks and busses are the major contributors to the traffic noise. Noise is described in loudness (intensity) and pitch ( frequency ) the exposure is using a logarithmicn decibel ( dB) scale. The Occupational Safety and Health Administration ( OSHA) recommends the hearing protection in the workplace if the noise is greater than 85 DB for more than eight hours, because there is a chance of the potential hearing loss. Difference of the loudest and faintest sounds that humans can hear is about 120 DB, a range of one million amplitude. People who has a very good hearing can hear the sounds between to -15 Decibels. If the sound reaches the 85 db and above can cause permanent damage of hearing. The more amount of time you listen in a sound effect greater damage it will cause. If the place is quiet the longer you listen safetly and it will not cause a damage even if you listen to it for a very long time. The more exposure to the common sounds can cause a permanent damage. The