Noise Pollution
Noise pollution is unwanted sound or environmental noise that is annoying, distracting, or physically harmful. It is typically created by humans and is harmful to health, welfare, and productivity. Even though noise only stays in the air for a short time, its effects are cumulative in terms of temporary or permanent hearing loss. Noise intensity is measured in decibel units; increased distance diminishes the decibel level that reaches the ear. Noise pollution can not only be physically harmful and painful, it can also decrease concentration, productivity, and peace of mind.
Transportation vehicles are the most significant sources of noise pollution, with aircraft, railroad stock, trucks, buses, automobiles, and motorcycles all producing excessive noise. Construction equipment, like jackhammers and bulldozers, also produce substantial noise pollution. Office equipment, factory machinery, appliances, power tools, hum from lighting fixtures, and audio entertainment systems are other common sources of noise pollution.
Reducing noise pollution can be very advantageous in industrial settings for the workers' sake, as well as to comply with governmental regulations. There are many methods available for helping to reduce or eliminate noise pollution. Sound absorption, vibration damping and sound barriers are all very common, in addition to soundproofed work areas. Acoustical panels and ceilings can also provide relief from noise pollution.