
Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
出版:Ente Nazionale Italiano di Unificazione (UNI)

專家解讀視頻
ISO 389-1:2017 specifies a standard reference zero for the scale of hearing threshold level applicable to pure-tone air conduction audiometers, to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world.
ISO 389-1 : 2017 - Identical
EN ISO 389-1:2018 - Identical
ISO 389-1 : 2017 - Identical