关于次声和低频噪声对人体的影响以及控制问题,近年来逐渐引起人们的重视,各种调查和研究工作也在不断深入。铁路系统也已提出许多有关这方面的问題,如一些机车乘务员反映,当机车进入隧道或高速运行时有较严重的耳膜压迫感等等;另外工厂中也存在各种产生较大次声和低频噪声的机械,因此实际工作中提出了如何正确測量的方法问 In recent years, people pay more attention to the influence of infrasound and low-frequency noise on the human body as well as control issues. Various surveys and research work are also continuing to deepen. The railway system has also raised many issues in this regard, such as some locomotive crew reflected when the locomotive into the tunnel or high speed operation have more severe eardrum pressure sense, etc. Also there are a variety of factories have a greater infrasound and low frequency Noisy machinery, so practical work is asked how to correctly measure the method asked