Acoustics. Reference zero for the calibration of audiometric equipment. Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
NORM herausgegeben am 1.12.2000
Designation standards: STN EN ISO 389-7
Classification mark: 011630
Catalog number: 80295
Note: UNGÜLTIG
Publication date standards: 1.12.2000
Approximate weight : 30 g (0.07 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN