Audiometer

Details Audiometer Audiometer

1977-04-08

1978-08-22

Brown, Thomas W.

A61B 407

Patent

active

041091060

ABSTRACT:
A combined tone-speech audiometer for the semi-automatic recording of the measuring values found both in tone audiometry and in speech audiometry, the measuring point each time being defined by the point of intersection of two sliders. For tone audiometry the frequency slider is locked in locking positions which are non-equidistant, whereas for speech audiometry it is locked in positions which are equidistant. For this purpose a rotatable roller, spindle or the like is provided which has on its circumference two groups of locking positions, one for tone audiometry and one for speech audiometry. To change from one locking mode to another the spindle is rotated until the other group of locking positions is operative.

REFERENCES:
patent: 2744158 (1956-05-01), Gransot
patent: 2802053 (1957-08-01), Wiese

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