Barany Noise Box

Barany Noise box is a standard for masking while performing bone conduction audiogram testing. This instrument provides a broad band noise. Of course there may be a dip in certain frequencies. Maximum sound output varies from one box to the other, but at the most 90 dB can be generated when it is held over the ear. These levels of noise are sufficient to mask one ear for all practical purposes. The only danger being that sound can travel around the skull to the test ear as well thereby masking it too.

Nearly 80% of normal ears will be masked by a Barany's noise box.

Sound can be generated by winding the key provided. It works like a clock work mechanism.