AFNOR - NF EN ISO 389-9
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9 : preferred test conditions for the determination of reference hearing threshold levels
active, Most Current
| Organization: | AFNOR |
| Publication Date: | 1 August 2009 |
| Status: | active |
| ICS Code (Noise with respect to human beings): | 13.140 |
Document History
NF EN ISO 389-9
August 1, 2009
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9 : preferred test conditions for the determination of reference hearing threshold levels
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