Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration (ISO 389-6:2007); German version EN ISO 389-6:2007— 14 стр.
Acoustics; standard reference zero for the calibration of pure-tone bone conduction audiometers (identical with ISO 7566:1987); german version EN 27566:1991— 12 стр.
Acoustics; standard reference zero for the calibration of pure-tone bone conduction audiometers (identical with ISO 7566:1987); german version EN 27566:1991— 12 стр.
Acoustics; standard reference zero for the calibration of pure tone air conduction audiometers; identical with ISO 389:1985 (status as of 1986)— 9 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.