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IEC 60645-1:1992 ed1.0

Заменен
Audiometers - Part 1: Pure-tone audiometers — 53 стр.
Specifies general requirements for audiometers and particular requirements for pure-tone audiometers designed for use in determining hearing threshold levels in comparison with the standard reference threshold level by means of psycho-acoustic test methods. The contents of the corrigendum of February 1993 have been included in this copy.
ICS
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры