GOST R IEC 60318-5-2010 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
IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones
ISO 389-2:1994 Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
GOST R IEC 60318-5-2010 history
2010GOST R IEC 60318-5-2010 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