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Historical
ANSI/ASA S3.44-2016/Part 1 / ISO 1999:2013 (MOD)
Acoustics - Estimation of Noise-induced Hearing Loss - Part 1: Method for Calculating Expected Noise-induced Permanent Threshold Shift (a modified nationally adopted international standard)
ANSI/ASA S3.44 2016/Part 1/ISO 1999:2013 (MOD) 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. This modified standard allows an equivalent effective level (EEL), with a different exchange rate, to be substituted for LEX,8h.
Content Provider
Acoustical Society of America [asa]
