BS 6950:1988

Specification for a standard reference zero for the calibration of pure tone bone conduction audiometers

BSI Group , 02/29/1988

$95.00 $190.50

Gives reference equivalent threshold force levels for the hearing threshold of otologically normal persons, aged between 18 and 30 years by bone conduction audiometry; essential characteristics of the bone vibrator and its coupling to both the test subject and the mechanical coupler; essential characteristics and datum level of the masking noise applied to the ear not under test.