ISO 1999:2013
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The latest, up-to-date edition.
Acoustics — Estimation of noise-induced hearing loss
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English, Russian
23-09-2013
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.
| Committee |
ISO/TC 43
|
| DevelopmentNote |
Supersedes ISO/DIS 1999. (09/2013)
|
| DocumentType |
Standard
|
| Pages |
23
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS ISO 1999:2013 | Identical |
| NEN ISO 1999 : 2016 | Identical |
| ANSI/ASA S3.44 PART 1 : 2016 | Identical |
| PN-ISO 1999:2022-12 | Identical |
| IS 7194 : 2018 | Identical |
| PN ISO 1999 : 2000 | Identical |
| NFS 31 013 : 1985 | Similar to |
| NBN ISO 1999 : 1992 | Identical |
| UNE 74023:1992 | Similar to |
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