UNE EN ISO 389:1996被替代
Acoustics - Standard Reference Zero For The Calibration Of Pure-tone Air Conduction Audiometers
出版：Asociacion Espanola de Normalizacion
专家解读视频
Defines a standard reference zero for scale of hearing threshold level which applies to pure-tone air conduction audiometers for promotion agreement and uniformity in expressing hearing threshold level measurements worldwide.
Supersedes UNE 74020. (07/2003)
NF EN ISO 389:1995 - Identical
BS EN ISO 389:1997 - Identical
ISO 389:1991 - Identical
SN EN ISO 389:1996 - Identical
NEN EN ISO 389:1995 - Identical
DIN EN ISO 389 (1995-11) - Identical
I.S. EN ISO 389:1996 - Identical
SS EN ISO 389 Ed. 1 (1996) - Identical
