Noise Pollution – One of the immediate repercussions of the modern civilization is the environmental contamination which we call a scientific term-Pollution. The self Purifying and self-cleaning capacity of the primitive environment could not be destroyed for a fairly long time, in spite of all the misdeeds of man.
But recently, especially after the scientist and the industrial revolution, it is thought that life on a planet can be endangered by the unscrupulous assault on the environment by the most gifted creature of nature- the man.
What is Noise Pollution – Definition
Noise can be defined as unwanted sound which interferes with human communication, comfort, health, etc. This Pollution is caused due to poor urban planning. It is the serious threat. It is becoming an ever-increasing problem in this age of mechanical movements. Unwanted noises have the major impact that hearing sensitivity decrease with time. The Pollution contributes to cardiovascular effects in humans. It also leads to permanent hearing loss.
Sources of Noise Pollution – (Causes of Noise Pollution)
Unwanted sound (noise) not only can cause damage to psychological but also physiological health. Let’s take a look at the sources and cause.
Automobiles, trains and other means of road transportation: Various means of transportation are the biggest source of unwanted sounds. The number of auto-vehicles is fast increasing in the modern world. Traffic noise is particularly severe in the urban areas. Fast running trains also cause noise pollution along the rail tracts.
Jet aeroplanes: Taking off and landing of aeroplanes cause unbearable noises.
Workshops: Running of workshops and running machines produce very loud sound. This sound is really very irritating.
Loudspeakers, radios and musical bands: During festivals and marriages, use of loud-speakers, radios, musical bands are very common. The noise produced by all these sources are unbearable.
Some other sources: Various industries, various types of electric appliances used in kitchens and houses are some other common sources of noise. Moreover, operations, such as blasting, bulldozing, construction work, stone crushing, etc. have become disturbing irritants and sources of noise pollution.
Effects of Noise Pollution
The loudness and duration of noise cause varying degree of discomfort. It produces several harmful effects on our physical and mental health. Some of them are :
- Noise first causes anxiety and stress but then may lead to fright in extreme cases.
- Noise causes blood pressure by increasing level of cholesterol in the blood. It causes a headache by dilating blood vessels of the brain.
- A sudden and loud sound may affect the psychomotor performance of a person and causes an emotional disturbance.
- A sudden loud noise, such as explosion may damage the ear-drum. Exposure to high noise levels of 140 to 150 dB can rupture tympanum and cause permanent deafness.
- It interferes in communication.
- Noise affects the peace of mind and interrupts concentration of thought.
- It disturbs sleep and leads to nervous irritability.
- It lowers efficiency of work.
Control of Noise pollution- (Prevention of Noise Pollution) Solutions
Various methods can be adopted to minimize pollution. Some of these are
- There should be proper town planning so that there are no industries near human habitations. Industrial zones should be far away from human settlements.
- Proper lubrication and maintenance of machines can reduce noise.
- Persons working in noisy installations should be provided with protective devices, such as ear muffs or cotton plugs.
- In metropolitan areas, greenbelt vegetation and open space, in general, may have as great value in noise, as in air purification. It has been seen that plants are efficient absorbers of noise especially noise of high frequency. Border planting along highways and streets can be effective not only absorbing the noise but also deflecting it upward in the air.
- The enclosure of machinery with sound absorbing materials. It is an example of the industrial noise reduction pattern already practised by industries in advanced countries. Protection to workers can be provided through wearing devices, such as ear-plugs or ear muffs.
- Specific legislation and regulations should be proposed for designing and operation of machines, vibration control, sound-proof cabins, sound-absorbing materials, methods for measuring noise, permissible levels of noise and medical examination.
- Within a radius of 10 miles of an airport, no buildings or factories should be allowed. A big green belt around the airport should be planted.
- Use of loudspeakers and amplifiers should be restricted to a fixed intensity and fixed hours of the day.
- Blowing of pressure horns should be totally prohibited.
This is all about the basics of What is Noise Pollution-Definition [Sources, Causes, Control, Prevention] of Noise Pollution.