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许多生产环境及交通运输工具都有强烈的噪音,其强度甚至可达百余分贝,大城市街道中噪音常常超过90分贝,住宅居室内噪音也可高达70分贝,可以妨碍人们的工作与休息,甚至于可引起病理状态。噪音可以引起听觉迟钝甚至于耳聋。听觉分析器功能变化首先反映在对噪音的适应和听觉疲劳上,听觉适应与听觉疲劳现象实际上是听力丧失的前驅,在过大的噪音参
Many production environments and transportation vehicles have strong noises, with intensities of up to a hundred decibels, noise levels in metropolitan streets often exceeding 90 dB, and residential home acoustics up to 70 dB, which can hinder people’s work and rest , And even cause pathological conditions. Noise can cause hearing loss or even deafness. Auditory analyzer function changes first reflected in the noise adaptation and auditory fatigue, auditory adaptation and auditory fatigue phenomenon is actually a precursor to hearing loss, excessive noise in the Senate