AFNOR - NF EN ISO 389-4
Acoustics. Reference zero for the calibration of audiometric equipment. Part 4 : reference levels for narrow-band masking noise.
active, Most Current
| Organization: | AFNOR |
| Publication Date: | 1 August 1999 |
| Status: | active |
| Page Count: | 11 |
| ICS Code (Noise with respect to human beings): | 13.140 |
Document History
NF EN ISO 389-4
August 1, 1999
Acoustics. Reference zero for the calibration of audiometric equipment. Part 4 : reference levels for narrow-band masking noise.
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