I.S. EN ISO 389-1:2018現行
Acoustics - Reference Zero for the Calibration of Audiometric Equipment Part 1: Reference Equivalent Threshold Sound Pressure Levels for Pure Tones and Supra-aural Earphones (iso 389-1:2017)
出版：National Standards Authority of Ireland
專家解讀視頻
Defines 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.
EN ISO 389-1:2018 - Identical
NS EN ISO 389-1:2018 - Identical
BS EN ISO 389-1:2018 - Identical
NF EN ISO 389-1:2018 - Identical
EN ISO 389-1 : 0 - Identical
UNE EN ISO 389-1 : 2001 - Identical
DIN EN ISO 389-1 : 2000 - Identical
BS EN ISO 389-1 : 2000 - Identical
SN EN ISO 389-1 : 2000 - Identical
ISO 389-1 : 1998 - Identical
NBN EN ISO 389-1 : 2ED 2000 - Identical
UNI EN ISO 389-1 : 2000 - Identical
EN ISO 389-1 : 0 - Identical
