Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005)
STANDARD published on 1.2.2017
Designation standards: STN EN ISO 389-7:2006/A1
Classification mark: 011630
Catalog number: 123747
Note: Change
Publication date standards: 1.2.2017
Approximate weight : 21 g (0.05 lbs)
Country: Slovak technical standard