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Standard [CURRENT]

OENORM EN ISO 389-9:2009-11-15

Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)

German title
Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hörschwellenpegeln (ISO 389-9:2009)
Publication date
2009-11-15
Original language
German
Pages
15

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Publication date
2009-11-15
Original language
German
Pages
15

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