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ISO 389-9:2009 (R2025)
Acoustics — Reference zero for the calibration of audiometric equipment
Part 9: Preferred test conditions for the determination of reference hearing threshold levels
Part 9: Preferred test conditions for the determination of reference hearing threshold levels
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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.
Notes
90.93 : Norme internationale confirmée
Technical characteristics
| Publisher | International Organization for Standardization (ISO) |
| Publication Date | 05/07/2009 |
| Confirmation Date | 10/09/2025 |
| Edition | 1 |
| Page Count | 9 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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