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以往认为如噪声强度相同,则间断性噪声所致的听力损害较连续性噪声所致者为轻。Schmi-dek实验证明“休止期”对60dBA的噪声比对80dBA的噪声能给予更多保护。因此利用工业劳动者来确定噪声暴露和永久性听力损害之间的关系甚为重要。Sataloff研究确定钻岩机的间断性噪声引起的听力损害和强度低20dB的连续性噪声所引起的听力损害相同。作者按下述标准选择实验车间或对象:(1)最大噪声强度在95dBA以上;(2)最强和最弱噪声之间至少相差3dBA;(3)1个时间周期
In the past that if the same noise intensity, then the intermittent noise caused by hearing loss than the continuity caused by light noise. Schmi-dek experiments show that the “rest period” gives more protection to 60dBA noise than 80dBA noise. It is therefore important to use industrial workers to determine the relationship between noise exposure and permanent hearing impairment. The Sataloff study determined that hearing damage caused by intermittent noise from a rock drilling machine was the same as hearing loss caused by continuous noise with a low intensity of 20 dB. The author selects the lab or object according to the following criteria: (1) the maximum noise level is above 95 dBA; (2) the difference between the strongest and the weakest noises is at least 3dBA; (3) one period of time