SNV ISO 1999:1990现行
Acoustics; Determination Of Occupational Noise Exposure And Estimation Of Noise-induced Hearing Impairment
出版：Swiss Standards
专家解读视频
基本信息
标准编号： SNV ISO 1999:1990
标准类别：Standard
出版单位：Swiss Standards
标准页数：0
标准简介
Specifies practical relation for these quantities expressed as A-weighted noise level in dB and duration of exposure within a normal working week (40 hours) and the percentage of personnel that is to be expected to obtain a raised hearing threshold of 25 dB or more as a result of this exposure, averaged from 500, 1000 and 2000 Hz.
