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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
Automatically translated name:
Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 9: Preferred test conditions for the determination of reference hearing threshold levels
STANDARD published on 7.5.2009
The information about the standard:
Designation standards: ISO 389-9:2009
Publication date standards: 7.5.2009
SKU: NS-431700
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: International technical standard
Category: Technical standards ISO
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