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in stockReleased: 1999-11-18
UNE EN ISO 389-4:1999
ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)
Acústica. Cero de referencia para la calibración de equipos audiométricos. Parte 4: Niveles de referencia para ruido de enmascarador de banda estrecha. (ISO 389-4:1994).
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| Standard number: | UNE EN ISO 389-4:1999 |
| Pages: | 13 |
| Released: | 1999-11-18 |
| Status: | Standard |
DESCRIPTION
This standard UNE EN ISO 389-4:1999 ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994) is classified in these ICS categories:
- 13.140