Noise Pollution Assignment 2022
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Added on 2022-07-14
Noise Pollution Assignment 2022
Added on 2022-07-14
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Noise pollution: Causes, effects and control measures
Sound is main means of communication in many animals, including humans. A low sound is pleasant
and harmless. A loud, unpleasant or unwanted sound is called as noise. A given sound can appear music to
some and noise to others. It depends upon loudness, duration and mood of a person.
Noise (La. nausea=seasickness) is physical form of pollution. It is not harmful to air, soil and water but
affects the animals including humans. Noise is unwanted sound, that is unpleasant, loud and disruptive.
Humans have a hearing range called as audible range. Audible range depends upon frequency and
loudness of sound. For a person with normal hearing, frequency ranges from 20 to 20,000 Hz and
loudness ranges from 0 to 120 dB. Sound is measured in decibels (dB). A decibel value above 80 is
considered to be noise pollution.
Sources of Noise Pollution
1. Industrialization: Most of the industries use big machines which are capable of producing noise. Apart
from that, various equipment’s like compressors, generators, exhaust fans, grinding mills also participate
in producing noise.
2. Poor Urban Planning: In most of the developing countries, poor urban planning also play a vital role.
Congested houses, large families sharing small space, parking lots, street noise, honking, commercial zone
leads to noise pollution which disrupts the environment of society.
3. Social Events: Noise is at its peak in most of the social events. Whether it is marriage, parties, pub, disc
or place of worship, people normally defy rules set by the local administration and create nuisance in the
area. People play songs on full volume and dance till midnight which makes the condition of people living
nearby pretty worse.
4. Transportation: Large number of vehicles on roads, aero planes, trains produce heavy noise. The high
noise leads to a situation wherein a normal person lose the ability to hear properly.
5. Construction Activities: Construction activities like mining, construction of bridges, dams, buildings,
stations, roads, flyovers take place in almost every part of the world. These construction activities have to
be continued to meet the demand of ever increasing Population. It also creates noise pollution.
Sound is main means of communication in many animals, including humans. A low sound is pleasant
and harmless. A loud, unpleasant or unwanted sound is called as noise. A given sound can appear music to
some and noise to others. It depends upon loudness, duration and mood of a person.
Noise (La. nausea=seasickness) is physical form of pollution. It is not harmful to air, soil and water but
affects the animals including humans. Noise is unwanted sound, that is unpleasant, loud and disruptive.
Humans have a hearing range called as audible range. Audible range depends upon frequency and
loudness of sound. For a person with normal hearing, frequency ranges from 20 to 20,000 Hz and
loudness ranges from 0 to 120 dB. Sound is measured in decibels (dB). A decibel value above 80 is
considered to be noise pollution.
Sources of Noise Pollution
1. Industrialization: Most of the industries use big machines which are capable of producing noise. Apart
from that, various equipment’s like compressors, generators, exhaust fans, grinding mills also participate
in producing noise.
2. Poor Urban Planning: In most of the developing countries, poor urban planning also play a vital role.
Congested houses, large families sharing small space, parking lots, street noise, honking, commercial zone
leads to noise pollution which disrupts the environment of society.
3. Social Events: Noise is at its peak in most of the social events. Whether it is marriage, parties, pub, disc
or place of worship, people normally defy rules set by the local administration and create nuisance in the
area. People play songs on full volume and dance till midnight which makes the condition of people living
nearby pretty worse.
4. Transportation: Large number of vehicles on roads, aero planes, trains produce heavy noise. The high
noise leads to a situation wherein a normal person lose the ability to hear properly.
5. Construction Activities: Construction activities like mining, construction of bridges, dams, buildings,
stations, roads, flyovers take place in almost every part of the world. These construction activities have to
be continued to meet the demand of ever increasing Population. It also creates noise pollution.
6. Household Chores: We people are surrounded by gadgets and use them extensively in our daily life.
Gadgets like TV, mobile, mixer grinder, pressure cooker, vacuum cleaners, washing machine and dryer,
cooler, air conditioners are also contributors to the amount of noise that is produced and but many times it
affects the quality of life of our neighborhood.
7. Fireworks: Firework is a common thing during various fairs, festivals and cultural ceremonies. Apart
from air pollution, the intensity of their sound creates noise pollution.
8. Agricultural Machines: Tractors, thrashers, harvesters, tube wells, powered tillers etc. have all made
agriculture highly mechanical but at the same time highly noisy.
9. Defence Equipment and launching of satellites: A lot of noise pollution is added to the atmosphere by
artillery, tanks, launching of rockets, explosions, exercising of military airplanes and shooting practices.
Screams of jet engines and launching of satellite, sonic booms have a deafening impact on the ears.
10.Miscellaneous Sources: The automobile repair shops, market places, schools, colleges, bus stands, and
railway stations etc. are other sources of noise pollution.
Effects of noise pollution
Human response to noise varies from man to man according to age and temperament. It may vary even in
the same individual from time to time because of change in health, fatigue and other conditions (Fig). The
effects of noise on human beings are as under:-
1) Auditory effects: It includes deafness or auditory fatigue.
Deafness or impaired hearing: Prolonged exposures to noise lead to gradual deterioration of internal ear
and subsequently hearing loss or deafness. It may occur due to continuous exposure to noise level of more
than 90 dB. It may be temporary or permanent. Explosions or other high intensity sounds can also cause
immediate deafness by rupturing the ear drums or damaging the cochlea. Many time hearing loss is
attributed to occupation.
Auditory fatigue: It is defined as a temporary loss of hearing after exposure to sound. Continuous humming
sound such as whistling and buzzing in the ears.
2) Non auditory effects: These are:-
Irritation and annoyance: Noise, sometimes, leads to emotional disturbances and makes people loose
their temper. It can interfere with proper rest and sleep. Annoyance seems to increase with the loudness of
the sound.
Work efficiency: It has been observed that noise reduces the efficiency of work.
Physiological effects: It includes dilation of the pupils, paling of skin, tensing of voluntary muscles,
diminishing of gastric secretions, increase in diastolic blood pressure and the sudden injection of adrenalins
Gadgets like TV, mobile, mixer grinder, pressure cooker, vacuum cleaners, washing machine and dryer,
cooler, air conditioners are also contributors to the amount of noise that is produced and but many times it
affects the quality of life of our neighborhood.
7. Fireworks: Firework is a common thing during various fairs, festivals and cultural ceremonies. Apart
from air pollution, the intensity of their sound creates noise pollution.
8. Agricultural Machines: Tractors, thrashers, harvesters, tube wells, powered tillers etc. have all made
agriculture highly mechanical but at the same time highly noisy.
9. Defence Equipment and launching of satellites: A lot of noise pollution is added to the atmosphere by
artillery, tanks, launching of rockets, explosions, exercising of military airplanes and shooting practices.
Screams of jet engines and launching of satellite, sonic booms have a deafening impact on the ears.
10.Miscellaneous Sources: The automobile repair shops, market places, schools, colleges, bus stands, and
railway stations etc. are other sources of noise pollution.
Effects of noise pollution
Human response to noise varies from man to man according to age and temperament. It may vary even in
the same individual from time to time because of change in health, fatigue and other conditions (Fig). The
effects of noise on human beings are as under:-
1) Auditory effects: It includes deafness or auditory fatigue.
Deafness or impaired hearing: Prolonged exposures to noise lead to gradual deterioration of internal ear
and subsequently hearing loss or deafness. It may occur due to continuous exposure to noise level of more
than 90 dB. It may be temporary or permanent. Explosions or other high intensity sounds can also cause
immediate deafness by rupturing the ear drums or damaging the cochlea. Many time hearing loss is
attributed to occupation.
Auditory fatigue: It is defined as a temporary loss of hearing after exposure to sound. Continuous humming
sound such as whistling and buzzing in the ears.
2) Non auditory effects: These are:-
Irritation and annoyance: Noise, sometimes, leads to emotional disturbances and makes people loose
their temper. It can interfere with proper rest and sleep. Annoyance seems to increase with the loudness of
the sound.
Work efficiency: It has been observed that noise reduces the efficiency of work.
Physiological effects: It includes dilation of the pupils, paling of skin, tensing of voluntary muscles,
diminishing of gastric secretions, increase in diastolic blood pressure and the sudden injection of adrenalins
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