ISO 1999:2013 声学 噪声引起的听力损伤的评估

标准编号：ISO 1999:2013

中文名称：声学 噪声引起的听力损伤的评估

英文名称：Acoustics — Estimation of noise-induced hearing loss

发布日期：2013-10

标准范围

ISO 1999:2013规定了一种方法，用于计算因不同程度和持续时间的噪声暴露而导致的成年人群听力阈值水平的预期噪声诱发永久性阈值偏移；当常用测听频率或这些频率的组合的听阈水平超过一定值时，它为根据各种公式计算听力残疾提供了依据。风险人群暴露于噪声的衡量标准是在给定暴露年限内，标准化为8小时工作日（LEX，8小时）的噪声暴露水平。ISO 1999:2013适用于频率小于约10 kHz的噪声，该噪声是稳定的、间歇的、波动的、不规则的。对于超过200 Pa（相对于20μPa为140 dB）的声压，使用ISO 1999:2013被认为是外推。

ISO 1999:2013 specifies a method for calculating the expected noise-induced permanent threshold shift in the hearing threshold levels of adult populations due to various levels and durations of noise exposure; it provides the basis for calculating hearing disability according to various formulae when the hearing threshold levels at commonly measured audiometric frequencies, or combinations of such frequencies, exceed a certain value.The measure of exposure to noise for a population at risk is the noise exposure level normalized to a nominal 8 h working day, LEX,8h, for a given number of years of exposure. ISO 1999:2013 applies to noise at frequencies less than approximately 10 kHz which is steady, intermittent, fluctuating, irregular. Use of ISO 1999:2013 for sound pressures exceeding 200 Pa (140 dB relative to 20 μPa) is recognized as extrapolation.

标准预览图