(wikipedia)
Noise pollution is excessive, displeasing human, animal or machine-created environmental noise that disrupts the activity or balance of human or animal life. The word noise comes from the Latin word nauseas, meaning seasickness.
The source of most outdoor noise worldwide is mainly construction and transportation systems, including motor vehicle noise, aircraft noise and rail noise.[1][2] Poor urban planning may give rise to noise pollution, since side-by-side industrial and residential buildings can result in noise pollution in the residential area.
Indoor and outdoor noise pollution sources include car alarms, emergency service sirens, mechanical equipment, fireworks, compressed air horns, groundskeeping equipment, barking dogs, appliances, lighting hum, audio entertainment systems, electric megaphones, and loud people.

噪音污染是指人类在工业生产、建筑施工、交通运输和社会生活等活动中，产生的噪声干扰周围人类和动物生活环境。[1]
目前世界上环境噪声最主要的来源是交通噪声，包括汽车、飞机和火车产生的噪声，[2][3]如果城市规划不好，将工业区规划接近生活区，工业噪声也是一种主要污染，此外像建筑施工机械，娱乐扩音设施，甚至一些办公设备，人们大声喧哗吵闹，都是噪声污染源。