Active
Standard
Most Recent
NBN EN ISO 389-9:2009
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)
Preview
Summary
ISO 389-9:2009 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing threshold levels.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 07/17/2009 |
| Cancellation Date | 11/30/2009 |
| Page Count | 21 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
No products.