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ISO 1999:2013

Acoustics — Estimation of noise-induced hearing loss

Sep 23, 2013

General information

90.93     Oct 2, 2025

ISO

ISO/TC 43

International Standard

13.140  

English   Russian  

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 1999:1990

NOW

PUBLISHED
ISO 1999:2013
90.93 Standard confirmed
Oct 2, 2025

REVISED BY

ABANDON
ISO/DTS 1999

National adoptions

SRPS ISO 1999:2017  
ISS

Acoustics — Estimation of noise-induced hearing loss

90.93   Standard confirmed

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