Noise is defined as unwanted sound. Mild noise can be annoying; excessive noise can destroy a person’s hearing. People do not easily become accustomed to noise. The slightest unwanted sound can become very annoying if it continues for any length of time.
Causes
Main causes of noise pollution are listed under:
Auto/Motorcycle rickshaws
Pressure horns
Faulty vehicles
Loud speakers and musical instruments
Industrial/engineering workshops in urban areas
Effects
Noise pollution can have the following effects:
Hearing loss
Cardiovascular problems associated with accelerated heartbeat and high blood pressure
Gastric intestinal problems
Decrease in alertness
Decrease in ability to memorize
Long lasting effects like insomnia, nervousness, bulimia, chronically high blood pressure, anxiety, depression and sexual dysfunction
Remedies
Some simple and useful remedies are stated in the following to control noise pollution:
Use of low pitch horns and effective silencer in vehicles
Proper service and tuning of vehicles
Use of 4-stroke engines
Adaptation of noise control systems in industries
Avoid excessive use of loud speakers and sound systems