Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry (IEC 60318-3:1998); German version EN 60318-3:1998— 10 стр.
Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent treshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:1998); English version of DIN EN ISO 389-1— 10 стр.
Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry (IEC 60318-3:2014); German version EN 60318-3:2015— 13 стр.
Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry (IEC 60318-3:2014); German version EN 60318-3:2015— 13 стр.
Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent treshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:1998); English version of DIN EN ISO 389-1— 10 стр.