SS EN ISO 389-7 Ed. 2 (2005)现行
Acoustics - Reference Zero For The Calibration Of Audiometric Equipment - Part 7: Reference Threshold Of Hearing Under Free-field And Diffuse-field Listening Conditions
出版：Standardiserings-Kommissionen I Sverige
专家解读视频
Specifies a reference threshold of hearing for the calibration of audiometric equipment used under the following conditions.
EN ISO 389-7:2005 - Identical
UNI EN ISO 389-7:2016 - Identical
BS EN ISO 389-7:2005+A1:2016 - Identical
NS EN ISO 389-7:1998 - Identical
ONORM EN ISO 389-7:2017 - Identical
NS EN ISO 389-7 Ed. 2 (2006) - Identical
ISO 389-7:2005 - Identical
UNE EN ISO 389-7:2006 - Identical
SN EN ISO 389-7:2006 - Identical
NEN EN ISO 389-7:2006 - Identical
BS EN ISO 389-7:2005 - Identical
DIN EN ISO 389-7 (2006-04) - Identical
ONORM EN ISO 389-7:2006 - Identical
NF EN ISO 389-7:2006 - Identical
NBN EN ISO 389-7:2006 - Identical
UNI EN ISO 389-7:2006 - Identical
I.S. EN ISO 389-7:2005 - Identical
