Hand-held tone generator for equalizing binaural hearing aids

Details Hand-held tone generator for equalizing binaural hearing aids Hand-held tone generator for equalizing binaural hearing aids

1990-10-30

1992-01-14

Crosland, Donnie L.

Communications: electrical

Audible indication

Ultrasonic pest control

340391, 128746, G08B 300

Patent

active

050814419

ABSTRACT:
Audible tone generators, particularly a hand-held tone generator for generating an audible tone as a test for equalizing binaural hearing aids. The circuit is characterized by its "fountain pen" size, as well as its extreme simplicity and reliability.

REFERENCES:
patent: 4183278 (1980-01-01), Rea et al.
patent: 4567881 (1986-02-01), Heller
patent: 4658419 (1987-04-01), Denen
patent: 4688582 (1987-08-01), Heller et al.
patent: 4763355 (1988-08-01), Cox

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