Acoustics. Reference zero for the calibration of audiometric equipment. Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:1998)
STANDARD published on 1.10.2001
Designation standards: STN EN ISO 389-1
Classification mark: 011630
Catalog number: 18471
Note: WITHDRAWN
Publication date standards: 1.10.2001
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Slovak technical standard
Category: Technical standards STN