
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:International Organization for Standardization

专家解读视频
Gives a standard reference zero for the scale of hearing threshold level that applies to puretone air conduction audiometers, so as to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world.
AS/NZS ISO 389.1:2019 - Identical
BS EN ISO 389-1 : 2000 - Identical
EN ISO 389-1:2018 - Identical
NF EN ISO 389-1 : 2018 - Identical
I.S. EN ISO 389-1:2000 - Identical
EN ISO 389-1 : 0 - Identical
UNI EN ISO 389-1:2018 - Identical
SS-EN ISO 389-1:2018 - Identical
ONORM EN ISO 389-1 : 2018 - Identical
DS EN ISO 389-1 : 2018 - Identical
NEN EN ISO 389-1 : 2018 - Identical
PN EN ISO 389-1 : 2018 - Identical
SN EN ISO 389-1:2018 - Identical
EN ISO 389-1:2018 - Identical
UNE-EN ISO 389-1:2019 - Identical
DS EN ISO 389-1 : 2018 - Identical
AS/NZS ISO 389.1:2019 - Identical
UNI EN ISO 389-1:2018 - Identical
SN EN ISO 389-1:2018 - Identical
ONORM EN ISO 389-1 : 2018 - Identical
PN EN ISO 389-1 : 2018 - Identical
EN ISO 389-1 : 0 - Identical
NF EN ISO 389-1 : 2018 - Identical
SS-EN ISO 389-1:2018 - Identical
NEN EN ISO 389-1 : 2018 - Identical