Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold force levels for pure tones and bone vibrators.
NORM herausgegeben am 15.8.1999
Designation standards: BS EN ISO 389-3:1999
Note: UNGÜLTIG
Publication date standards: 15.8.1999
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: British technical standard
Kategorie: Technische Normen BS