This document discusses sound pollution or noise pollution. It identifies various sources of noise pollution including household sources, social events, commercial and industrial activities, transportation, poor urban planning, and sounds from motor vehicles, car alarms, office equipment, factory machinery, and construction work. The effects of noise pollution include hearing impairment, interference with communication, decreased efficiency, lack of concentration, sleep disturbances, damage to crops and buildings, and noise induced hearing loss. The document also mentions some noise control techniques to reduce noise pollution.