Acoustics - Standard reference zero for the calibration of pure-tone air conduction audiometers (ISO 389:1991); German version EN ISO 389:1995— 11 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.
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.
Acoustics; standard reference zero for the calibration of pure tone air conduction audiometers; identical with ISO 389:1985 (status as of 1986)— 9 стр.
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994); German version EN ISO 389-2:1996— 9 стр.
Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994); German version EN ISO 389-4:1998— 9 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 3: Reference equipment threshold force levels for pure tones and bone vibrators (ISO 389-3:1994, including Technical Corrigendum 1:1995)— 16 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.
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
