BS EN ISO 389-2:1997现行
Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones and insert earphones
出版：British Standards Institution
专家解读视频
Defines reference equivalent threshold sound pressure level (RETSPL) for calibrating pure-tone audiometers supplementary to those in ISO 389:1991.
© British Standards Institution 2013
Amendment notes:
AMD 9427 published 15 March 1997
Document identifier notes:
Formerly BS ISO 389-2:1994.
UNE EN ISO 389-2:1997 - Identical
SS EN ISO 389-2 Ed. 1 (1996) - Identical
ISO 389-2:1994 - Identical
NS EN ISO 389-2 Ed. 1 (1996) - Identical
UNI EN ISO 389-2:1997 - Identical
NF EN ISO 389-2:1996 - Identical
I.S. EN ISO 389-2:1997 - Identical
NBN EN ISO 389-2:1996 - Identical
ONORM EN ISO 389-2:1997 - Identical
DIN EN ISO 389-2 (1996-10) - Identical
NEN EN ISO 389-2:1996 - Identical
SN EN ISO 389-2:1997 - Identical
