Demodulator with drop-out compensation and reciprocal amplifier

Details Demodulator with drop-out compensation and reciprocal amplifier Demodulator with drop-out compensation and reciprocal amplifier

1983-12-16

1986-03-18

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329107, 329110, 329126, 329128, 375 82, 455214, H03K 906, H03D 300

Patent

active

045771588

ABSTRACT:
An FM signal demodulating circuit which provides accurate drop-out compensation without producing an unnatural sounding output. The period of the receive FM signal is periodically detected for each cycle thereof to produce a signal having a level corresponding to the period of the FM signal. The signal so derived is held for each period of the FM signal, including periods during which drop-out occurs. The reciprocal of the level of the held signal forms the demodulated output signal.

REFERENCES:
patent: 3075149 (1963-01-01), Marshall
patent: 3638128 (1972-01-01), Downs
patent: 4485347 (1984-11-01), Hirasawa et al.

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