
Electroacoustics - Equipment for the measurement of real-ear acoustical characteristics of hearing aids.
NORM herausgegeben am 28.2.2003
Designation standards: UNE-EN 61669:2003
Note: UNGÜLTIG
Publication date standards: 28.2.2003
The number of pages: 43
Approximate weight : 129 g (0.28 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE