Specification for reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts.
STANDARD published on 30.6.1981
Designation standards: BS 6111:1981
Note: WITHDRAWN
Publication date standards: 30.6.1981
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: British technical standard
Category: Technical standards BS