Remote hearing aid volume control

Details Remote hearing aid volume control Remote hearing aid volume control

1985-07-08

1988-12-06

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

34082568, 34082575, 381105, 455352, 455355, H04R 2500, H03G 302

Patent

active

047900199

ABSTRACT:
A hearing aid comprises a microphone, a battery-operated earphone, and amplifying circuit connected to the microphone output, the amplifying circuit including a frequency-selective circuit component and a sound level adjustment circuit component connected to the frequency-selective circuit component, and a remote sound wave control signal emitter circuit separate from the microphone, earphone and amplifying circuit and emitting sound wave control signals within the range of the microphone input.

REFERENCES:
patent: 3046798 (1962-07-01), Igarashi
patent: 3510777 (1970-05-01), Gordon
patent: 3973241 (1976-08-01), Streckenbach et al.
patent: 4121198 (1978-10-01), Tsuboi et al.
patent: 4198620 (1980-04-01), Vogt et al.
patent: 4208654 (1980-06-01), Vogt et al.
patent: 4334315 (1982-06-01), Ono et al.
patent: 4628907 (1986-12-01), Epley
"Special Hearing System", Sound and Communications, Sep. 1982, p. 12.

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