Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)
NORM herausgegeben am 13.1.2010
Designation standards: UNE-EN ISO 389-9:2010
Publication date standards: 13.1.2010
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE