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Noise pollution is human or machine generated sound which disturbs the environment. Unlike other forms of pollution , noise pollution is transient, and once the noise stops, there is no trace of it. While the intensity of noise at a particular instant can be measured, the cumulative damage caused by noise cannot be easily assessed. The definition of noise is also subjective, some people enjoy loud music, but it causes stress and headaches for others.
A noise is an undesired sound and whether it is undesirable for a particular individual depends on a number of factors such as 1. Intensity, content and frequency of the noise 2. Time at which it occurs, noise at night is a greater problem 3.The listeners temperament and state of mind. 4. Whether the listener can control the origin of the sound. A listener who has no control over the noise is more likely to be irritated.
The adverse effects of noise pollution are: 1.Hearing loss : High noise
levels can cause both short term and permanent hearing loss. A person will
recover from a short term hearing loss, if the person is no longer
exposed to loud noises. However, with continuous exposure to loud
noise, the human ear does not get a chance to recover and parts of
the ear are destroyed. The patient suffers from permanent hearing loss
which cannot be treated. Studies show that noise pollution causes more
hearing loss compared to aging. |
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