Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:1996)
NORM herausgegeben am 1.8.1998
Designation standards: ÖNORM EN ISO 389-7
Note: UNGÜLTIG
Publication date standards: 1.8.1998
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM