
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
NORMA vydaná dňa 5.11.2019
Designation standards: ISO 389-7:2019-ed.3.0
Publication date standards: 5.11.2019
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: International technical standard
Kategória: Technické normy ISO