Pilot cancellation circuit

Details Pilot cancellation circuit Pilot cancellation circuit

1989-08-14

1990-06-05

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381 7, H04H 500

Patent

active

049320580

ABSTRACT:
A switched capacitor pilot cancellation circuit included in an FM stereo decoder signal path which substantially eliminates the 19 kHz pilot from the FM composite by subtracting a reconstructed pilot frequency signal from the FM composite. The reconstructed pilot signal is obtained by applying the DC output voltage of a pilot magnitude detector to a switched capacitor network which is sampled by clock signals which convert the DC to 19 kHz.

REFERENCES:
patent: 4569072 (1986-02-01), Van Roermund
patent: 4723286 (1988-02-01), Kamp
patent: 4860354 (1989-08-01), Van Roermund

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