BS-EN-ISO-389-7 › Complete Document History
Acoustics. Reference zero for the calibration of audiometric equipment

Complete Current Edition:
   2019 EDITION - Reference threshold of hearing under free-field and diffuse-field listening conditions. - Dec. 6, 2019

Obsolete Revision Information:
   2005/A1 EDITION - 2005 EDITION WITH AMENDMENT 1 INTERFILED - Oct. 1, 2016
   2005 EDITION - THRESHOLD OF HEARING UNDER FREE-FIELD and DIFFUSE-FIELD LISTEN - Jan. 23, 2006
   1998 EDITION - PART 7: REFERENCE THRESHOLD OF - April 15, 1998