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

NORM herausgegeben am 7.5.2009

The information about the standard:

Designation standards: ISO 389-9:2009
Publication date standards: 7.5.2009
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: International technical standard
Kategorie: Technische Normen ISO