DIN EN ISO 389-9:2009-12

Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels.

NORMA vydaná dňa 1.12.2009

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The information about the standard:

Designation standards: DIN EN ISO 389-9:2009-12
Publication date standards: 1.12.2009
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: German technical standard
Kategória: Technické normy DIN

Annotation of standard text DIN EN ISO 389-9:2009-12 :

Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hörschwellenpegeln.