
Acoustics. Reference zero for the calibration of audiometric equipment. Reference threshold of hearing under free-field and diffuse-field listening conditions.
NORM herausgegeben am 31.10.2016
Designation standards: BS EN ISO 389-7:2005+A1:2016
Note: UNGÜLTIG
Publication date standards: 31.10.2016
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: British technical standard
Kategorie: Technische Normen BS