FM Noise suppressor

Details FM Noise suppressor FM Noise suppressor

1978-03-28

1980-03-04

Olms, Douglas W.

325478, H04H 500

Patent

active

041918517

ABSTRACT:
An FM noise suppressor comprising a detector circuit which detects noise pulses included in a detected stereo composite signal, a gate circuit which is enabled or disabled by an output from the detector circuit, and a reproducing circuit which receives the stereo composite signal without intervention of the gate circuit and which reproduces a subcarrier signal for FM stereo signal demodulation in synchronism with a pilot signal included in the received stereo composite signal. A decoder demodulates stereo signals on the basis of an output signal of the gate circuit and the output signal of the reproducing circuit.

REFERENCES:
patent: 3634626 (1972-01-01), Staley
patent: 3662113 (1972-05-01), Von Recklinghausen
patent: 3739285 (1970-10-01), Hepp
patent: 3999132 (1976-12-01), Smith
patent: 4066845 (1978-01-01), Kishi

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