BS 4668:1971

Specification for an acoustic coupler (IEC reference type) for calibration of earphones used in audiometry.

NORMA vydána dne 22.2.1971

Anglicky -
Elektronické PDF (1792.30 CZK)

The information about the standard:

Designation standards: BS 4668:1971
Note: NEPLATNÁ
Publication date standards: 22.2.1971
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: British technical standard
Kategorie: Technické normy BS