BS 6950:1988

Заменен

Specification for a standard reference zero for the calibration of pure tone bone conduction audiometers — 18 стр.

Ссылочные документы

BS EN ISO 389-3:1999

Заменен

Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold force levels for pure tones and bone vibrators — 20 стр.

BS 2497-4:1972

Заменен

Specification for a reference zero for the calibration of pure-tone audiometers, Normal threshold of hearing for pure tones by bone conduction

На этот документ ссылаются

BS 2497-4:1972

Заменен

Specification for a reference zero for the calibration of pure-tone audiometers, Normal threshold of hearing for pure tones by bone conduction