Like all our other senses, hearing needs rest too.
Noise pollution is constant in all our urban areas.
It’s almost always man made/caused (lots of reasons, excuses, justifications etc)
Here is a slightly old, but still valuable paper on the issue from WHO:
https://www.who.int/docstore/peh/noise/Comnoise-1.pdf
and this from Central Pollution control Board (MoEF, GoI):
CPCB | Central Pollution Control Board, Ministry of Environment, Forest and Climate Change, Water Pollution, Air Pollution, Noise Pollution, Waste Management
cpcb.nic.in
AIR ACT
Under section 2(a) of Air (Prevention and Control of Pollution) Act, 1981 noise is defined as air pollutant
“Air pollutant" means any solid, liquid or gaseous substance [(including noise)] present in the atmosphere in such concentration as may be or tend to be injurious to human beings or other living creatures or plants or property or environment.”. Increasing ambient noise level in public places from various sources, inter-alia, industry activity, construction activity, generators sets, loud speakers, public address systems, music systems, vehicular horns and other mechanical devices have deleterious effects on human health and the psychological well being of the people. Therefore, it is considered necessary to regulate and control of noise producing and generating sources with the objective of maintaining the ambient air quality standards in respect of noise.
NOISE RULES
Central Government notified the Noise Pollution (Regulation and Control) Rules, 2000 as it is published in the Gazette of India, Extraordinary, Part-II –section 3(ii), vide S.O 123 (E) dated 14.2.2000. In reference to abovementioned rules following responsibilities are vested with State Governments, District Magistrate, Police Commissioner, or any other officer not below the rank of Deputy Superintendent of Police:
1. Enforcement of Noise Pollution control measures and the due compliance of ambient air quality standards in respect of noise.
2. Restriction on the use of Loud Speakers/Public Address system.
3. Restriction on the use of Horns, Sound emitting construction equipment and bursting of Fire crackers.
4. Prohibition of continuance Music Sound or Noise.
5. Authority shall act on the complaint and take action against the violator in accordance with the provisions of rules.
6. Disallowing sound producing instrument after 10 p.m to 6 a.m except in closed premises.
7. State Government may permit loud speakers or public address system in night hours
(between 10.00 p.m. to 12.00 midnight not exceeding 15 days in year.
Ambient Air Quality Standards in Respect of Noise is notified under Noise Pollution (Regulation and Control) Rules, 2000. Silence Zone is defined as areas up to 100 meters around such premises as hospitals, educational institutes and courts. The Silence Zones are to be declared by competent authority.