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### Theory:

Noise pollution:
• The presence of unwanted and unpleasant sounds in the earth's environment is called noise pollution.
• Human beings can hear sounds ranging up to $$85$$ $$decibels$$. Above that, any sound can damage our hearing power.
• The unwanted noise in the environment harms the health of the organisms present on the earth.
Sound produced by cutting machines

Health hazards due to noise pollution:
• Irritation, stress, nervousness, and headaches are all possible side effects of noise.
• Long-term noise exposure can alter a person's sleeping pattern.
• Long-term noise exposure can impair hearing ability. It can sometimes result in hearing loss.
• Sudden exposure to louder noise can result in a heart attack and knocking out.
• It causes a lack of concentration in one’s work.
• The noise of horns, loudspeakers, etc., cause disturbances are leading to a lack of concentration.
• Noise pollution affects a person’s peace of mind. It adds to the existing tensions of modern living. These tensions result in diseases like high blood pressure or short-tempered nature.
Prevention of Noise Pollution:
• Factories and industries should be set up at a distance from residential areas.
• Silencing devices should be installed in heavy vehicles such as aircraft, industrial equipment, machinery and other home appliances.
• Usage of horns should be reduced, especially near public places such as schools, religious places and hospitals.
• Soundproofing systems should be installed in party halls, industries and other buildings that produce a huge amount of unwanted sounds.
• Trees should be planted in huge numbers as they can absorb unwanted noise from the environment.
Hearing loss:

Various reasons cause hearing loss. Some of them are listed below.
• Aging
• Ear infections if not treated
• Certain medicines
• Genetic disorders
• A severe blow to the head
• Loud noise
Reference:
https://www.blast-block.com/industrial-noise-control-and-noise-mitigation-by-blastblock/