AENOR - UNE-EN ISO 389-4
ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)
active, Most Current
| Organization: | AENOR |
| Publication Date: | 18 November 1999 |
| Status: | active |
| Page Count: | 14 |
| ICS Code (Noise with respect to human beings): | 13.140 |
Document History
UNE-EN ISO 389-4
November 18, 1999
ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)
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