
Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry
NORMA vydána dne 1.12.2010
Designation standards: GB/T 25498.3-2010
Publication date standards: 1.12.2010
Country: Chinese technical standard
Kategorie: Technické normy GB