BS EN ISO 389-7:1998

Acoustics. Reference zero for the calibration of audiometric equipment. Reference threshold of hearing under free-field and diffuse-field listening conditions.

NORMA vydaná dňa 15.4.1998

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The information about the standard:

Designation standards: BS EN ISO 389-7:1998
Note: NEPLATNÁ
Publication date standards: 15.4.1998
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: British technical standard
Kategória: Technické normy BS