Tone count audiometric computer

Details Tone count audiometric computer Tone count audiometric computer

1975-05-13

1976-07-20

Claffy, Kathleen H.

H04R 2900

Patent

active

039707857

ABSTRACT:
A hearing threshold level measuring apparatus for automatically determining testing hearing level in each ear and processing the test scores for either manual or automatic readout. A predetermined number of tone bursts varied randomly from one to four in each test sequence and automatically decreased in level. The subject is provided with a response panel containing pushbuttons labelled one through four. The subject's bearing threshold is then determined from his pushbutton responses to his correct burst tone counts.

REFERENCES:
patent: 3536835 (1970-10-01), Ramer
patent: 3793485 (1974-02-01), Feezer

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