BS EN ISO 7029:2017提供了不同年龄的耳科正常人在单耳耳机监听条件下的听阈偏差的描述性统计数据。对于18岁至80岁年龄范围内的人群，在125 Hz至8000 Hz的测听频率范围内，它规定了以下内容:相对于18岁时的平均听阈给出的预期听阈中值；高于和低于中值的预期统计分布。对于3000 Hz至8000 Hz的频率，70岁以上人口的中值和统计分布仅供参考。 本文件还提供了22岁至80岁年龄范围内9000 Hz至12500 Hz测听频率的预期中值信息。这些数据适用于估计人群中特定因素造成的听力损失量。如果研究人群包括耳科正常的人，且预期特定药物的作用，则这种比较是有效的。噪声暴露是一个特定因素的例子，在本应用中，从本文件中选择的数据在ISO 1999中称为“数据库a”。交叉引用:ISO 389-1:1998ISO 389-2ISO 389-5ISO 389-8ISO 1999:2013ISO 8253-1: 2010ISO 8253-2ISO 28961IEC 60645-1ANSI S 3.6:1989购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS EN ISO 7029:2017 provides descriptive statistics of the hearing threshold deviation for populations of otologically normal persons of various ages under monaural earphone listening conidtions. It spoecifices the following, for populations within the age limits from 18 years to 80 years for the range of audiometric frequencies from 125 Hz to 8000 Hz:the expected median value of hearing thresholds given relative to the median hearing threshold at the age of 18 years;the expected statistical distribution above and below the median value.For the frequencies from 3000 Hz to 8000 Hz, the median and statistical distribution for populations above 70 years are presented for information only.This document also provides for information the expected median values at audiometric frequencies from 9000 Hz to 12500 Hz within the age limits from 22 years to 80 years.The data are applicable for estimating the amount of hearing loss caused by a specific agent in a population. Such a comparison is valid if the population under study consists of persons who are otologicaly normal expect for the effect of the specific agent. Noise exposure is an example of a specific agent and for this application, selected data from this document are referred to as "database A" in ISO 1999.Cross References:ISO 389-1:1998ISO 389-2ISO 389-5ISO 389-8ISO 1999:2013ISO 8253-1:2010ISO 8253-2ISO 28961IEC 60645-1ANSI S 3.6:1989All current amendments available at time of purchase are included with the purchase of this document.