AENOR - UNE-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 (ISO 389-9:2009)
active, Most Current
| Organization: | AENOR |
| Publication Date: | 13 January 2010 |
| Status: | active |
| Page Count: | 16 |
| ICS Code (Noise with respect to human beings): | 13.140 |
Document History
UNE-EN ISO 389-9
January 13, 2010
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)
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