Electroacoustics. Simulators of human head and ear. 2 cm$u3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts— 18 стр.
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones— 12 стр.
Electroacoustics - Hearing aids - Part 15: Methods for characterising signal processing in hearing aids with a speech-like signal (IEC 60118-15:2012) (english version)
