BS 2497-6:1988

Заменен

Acoustics. Reference zero for the calibration of audiometric equipment, Specification for a standard reference zero using an artificial ear complying with BS 4669 — 7 стр.

Описание Изменения Ссылки Версии

Ссылочные документы

BS EN ISO 389:1997

Заменен

Acoustics. Standard reference zero for the calibration of pure tone air conduction audiometers — 14 стр.

BS 2497-3:1972

Заменен

Specification for a reference zero for the calibration of pure-tone audiometers, Data for a wide-band artificial ear complying with BS 4669

На этот документ ссылаются

BS 2497-3:1972

Заменен

Specification for a reference zero for the calibration of pure-tone audiometers, Data for a wide-band artificial ear complying with BS 4669

BS EN ISO 389:1997

Заменен

Acoustics. Standard reference zero for the calibration of pure tone air conduction audiometers — 14 стр.