BS EN ISO 389-2:1997

Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones and insert earphones.

NORMA vydaná dňa 15.3.1995

The information about the standard:

Designation standards: BS EN ISO 389-2:1997
Publication date standards: 15.3.1995
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Kategória: Technické normy BS