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 389-1:1998
ISO 389-2
ISO 389-5
ISO 389-8
ISO 1999:2013
ISO 8253-1:2010
ISO 8253-2
ISO 28961
IEC 60645-1
ANSI S 3.6:1989


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