Sound Pollution
Noise
pollution is
displeasing or excessive noise
that
may disrupt the activity or balance of human or animal life. The word
noise
is
cognate with the Latin word nauseas,
which means disgust or discomfort. The source of most outdoor noise
worldwide is mainly caused by machines
and
transportation
systems,
motor
vehicles,
aircrafts,
and trains.Outdoor
noise is summarized by the word environmental
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 areas.
Indoor
noise is caused by machines, building activities, music performances,
and especially in some workplaces. There is no great difference
whether noise-induced
hearing loss is
brought about by outside (e.g. trains) or inside (e.g. music) noise.
High
noise levels can contribute to cardiovascular effects in humans, a
rise in blood pressure, and an increase in stress and
vasoconstriction, and an increased incidence of coronary artery
disease. In animals, noise can increase the risk of death by altering
predator or prey detection and avoidance, interfere with reproduction
and navigation, and contribute to permanent hearing loss.
Reference :
http://en.wikipedia.org/wiki/Noise_pollution
Sound Wave
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