Correction control circuit for AM stereophonic receivers

Details Correction control circuit for AM stereophonic receivers Correction control circuit for AM stereophonic receivers

1985-08-02

1987-07-07

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

455216, H04H 500

Patent

active

046792376

ABSTRACT:
A correction control circuit for use in compatible AM stereophonic receivers of the type utilizing a cosine correction signal to remove inherent distortion from the received and detected signals. During periods of weak or noisy signals or when co-channel interference is present, excess cosine correction signal causes a reduction in the amount of stereo difference signal component in the output signals, and in the amount of correction provided. In a worst case signal situation, there will be no difference signal component in the output and the monophonic output not be corrected.

REFERENCES:
patent: 4371747 (1983-02-01), Hilbert
patent: 4377728 (1983-03-01), Hilbert

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