BS-EN-ISO-389-1 › Complete Document History
Acoustics. Reference zero for the calibration of audiometric equipment

Complete Current Edition:
   2018 EDITION - Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones - March 2, 2018

Obsolete Revision Information:
   2000 EDITION - Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones - May 15, 2000