NF C97-618-5*NF EN 60318-5:2006 Electroacoustics - Simulators of human head and ear - Part 5 : 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts.
2006NF C97-618-5*NF EN 60318-5:2006 Electroacoustics - Simulators of human head and ear - Part 5 : 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts.