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in stockReleased: 1999-07
DIN EN ISO 389-4
Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994)
Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 4: Bezugspegel für schmalbandige Verdeckungsgeräusche (ISO 389-4:1994); Deutsche Fassung EN ISO 389-4:1998
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German PDF
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German Hardcopy
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| Status: | Standard |
| Released: | 1999-07 |
| Standard number: | DIN EN ISO 389-4 |
| Name: | Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994) |
| Pages: | 7 |
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