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 - 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 air conduction audiometers (ISO 389:1991); German version EN ISO 389:1995— 11 стр.
Acoustics; threshold of hearing by air conduction as a function of age and sex otologically normal persons (identical with ISO 7029:1984); german version EN 27029:1991— 9 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.