System for testing adequacy of human hearing

Details System for testing adequacy of human hearing System for testing adequacy of human hearing

1993-11-29

1995-05-09

Pellegrino, Stephen C.

Surgery

Truss

Pad

73585, A61B 500

Patent

active

054131146

ABSTRACT:
Multiple single-frequency tones are presented simultaneously to a subject by each of two transducers for the purpose of testing hearing. One transducer is employed to present a plurality of f.sub.1 primaries and the other transducer a plurality of f.sub.2 primaries so as to make the ratio of f.sub.2 to f.sub.1 sufficient to produce evoked distortion products by the pair. Proper selection of the frequencies prevents numerous intermodulation products.

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patent: 4289143 (1981-09-01), Canavesio et al.
patent: 4374526 (1983-02-01), Kemp
patent: 4459996 (1984-07-01), Teele
patent: 4884447 (1989-12-01), Kemp et al.
patent: 5063946 (1991-11-01), Wada
patent: 5105822 (1992-04-01), Stevens et al.
patent: 5267571 (1993-12-01), Zurek et al.

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