Hearing aid coupled with a radio

Details Hearing aid coupled with a radio Hearing aid coupled with a radio

1983-07-21

1985-01-01

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Combined with diverse art device

179107R, 381107, H04B 106, H04R 2700

Patent

active

044919808

ABSTRACT:
A built in radio/hearing aid comprises a control voltage generator means which generates a control voltage depending on the level of a microphone signal of the hearing aid and a mixing control means which controls the ratio of the mixture of a radio signal from a radio signal generator and the microphone signal from a microphone in accordance with the level of the control voltage. Thus, the level of the radio signals is automatically changed in accordance with the level of circumstantial audio signals within the microphone signal.

REFERENCES:
patent: 2766378 (1966-10-01), Sundin et al.
patent: 3518375 (1970-06-01), Hawkins
patent: 3992584 (1976-11-01), Dugan
patent: 4352088 (1982-09-01), Isunoda

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