ISO 389-2:1994(R2014)现行
ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 2: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES
出版：International Organization for Standardization
专家解读视频
Covers reference equivalent threshold sound pressure levels (RETSPL) for the calibration of pure-tone audiometers supplementary to those specified in I.S. EN ISO 389.
BS ISO 389-2 : 1994 AMD 9427 - Identical
DS EN ISO 389-2 : 1997 - Identical
GOST R ISO 389-2 : 2011 - Identical
PN EN ISO 389-2 : 2002 - Identical
AS ISO 389.2-2007 (R2019) - Identical
