城市居民区配套设备噪声频率特性分析

摘要

The frequency spectrum as well as the energy ratio of low band, mid band and high band of noise sources in residential area from typical facilities including transformer substations, garages, elevator shafts, elevator control rooms, air conditioner external unit and pump houses were analyzed. The result showed that most of the maximal sound pressure levels appeared in the low band (five ones appeared in six typical noise sources) and most of the maximal energy distribution also appeared in the low band (five ones appeared in six typical noise sources). So the low-frequency noise was the biggest noise source in the resident area.%对绵阳市某居住区典型的配套设备噪声源进行分析，选取变配电房噪声、车库噪声、电梯井噪声、电梯控制室噪声、家用空调室外机、水泵房等6种典型噪声源。分析这些噪声源的频谱及低、中、高频段的能量比率。结果表明，各声源最大声压级所在频段以低频段最多（6种典型噪声中占5种），最大能量分布频段也是以低频段最多（6种典型噪声中占5种），因而低频噪声已经成为居住区中影响最大的噪声源。