Noise Pollution

Topics: Noise pollution, Ear, Sound Pages: 7 (2230 words) Published: May 9, 2014

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 normal conversation occurs 60 DB. According to my research, the causes of damage in our ears, like the bulldozer idling the sounds are loud 85 DB and can cause permanent damage after only 1 work day ( 8 hours ). Listening a music with earphone/ headpones in ears at a maximum volume, the sound can reach level over 100 Db, begin causing permanent damage after 15 minutes per day. A thunder from storm 120 Db, gunshot 140 -190 DB can both cause immediate damage. There are groups of people who are affected by this noise pollution such as the young, elderly, and the hospitalized. Young children cannot protect their hearing and they only rely on their parents to keep them from noise exposure.Elderly may not have the capabilities to protect their hearing if they are the one who is disabled by mental or physical illness. Also the patients from the hospitals are not safe because patients especially for orthopedic surgeries may be exposed to loud instruments during a procedure although they are not protected from it while under anesthesia.

Noise has numerous health effects making noise pollution a public concern although it has not been well addressed.These could be effected our blood pressure, noise -induced hearing loss,sleep disorders and irritability.Noise pollution also affects the performance at work and school. Noise pollution is harmful because the sound energy is transferred through compressions, and rarefactions. Because the intensity is very large and it can harm the human ears, and the animal ears also and it can damage to physical structure.When sound reach the human ear the structures will vibrate. The intense vibrations can be rapture the eardrum , loudness related hearing loss usually develops overtime. When the sound enters the ear, it is transferred to the brain as a nerve impulse. The nerves in our ears are composed of of tiny nerve fibers, it is surrounded by special fluid within the ear. When intense sound transferred through fluid the tiny nerves may...
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