随着现代工业的发展,机械化程度越来越高,交通工具速度越来越快,发生噪声的声源也随之越来越多且越强,因而噪声污染日益突出起来,列为世界八大公害之一。有的国家如日本,已上升到仅次于大气、水源污染的第三大公害。噪声污染的来源主要有以下几方面: With the development of modern industry, the degree of mechanization is getting higher and higher, the speed of vehicles is getting faster and faster, and the noise sources are getting more and more powerful. As a result, the noise pollution is increasingly prominent and listed as the world’s eight major public hazards one. Some countries, such as Japan, have risen to third-largest pollution second only to the atmosphere and water pollution. The sources of noise pollution are mainly the following aspects: