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Norm

ISO 1999:2013

Issue date: 2013 09 23

Acoustics — Estimation of noise-induced hearing loss

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 ...
Valid
§ Legal References
Publisher:
International Organization for Standardization
Format:
Digital | 23 Pages
Language:
English

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.

ISO 1999:2013
2013 09 23
Acoustics — Estimation of noise-induced hearing loss
Norm
ISO 1999:1990
1990 01 18
Acoustics — Determination of occupational noise exposure and estimation of noise-induced hearing imp...
Norm
ISO 1999:1975
1975 08 01
Acoustics — Assessment of occupational noise exposure for hearing conservation purposes
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ISO/R 1999:1971
1971 01 15
Acoustics — Assessment of occupational noise exposure for hearing conservation purposes
Technische Regel
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