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 (ISO 389-9:2009); German version EN 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); Deutsche Fassung EN ISO 389-9:2009
Publication date: 2009-12
Original language: German
Pages: 18

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Content

ICS

13.140

DOI

https://dx.doi.org/10.31030/1505366

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