Electroacoustics—Simulators of human head and ear—Part 52 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts
NORM herausgegeben am 7.9.2017
Designation standards: GB/T 25498.5-2017
Publication date standards: 7.9.2017
Country: Chinese technical standard
Kategorie: Technische Normen GB