Broadcast signal conditioning method and apparatus

Details Broadcast signal conditioning method and apparatus Broadcast signal conditioning method and apparatus

1989-11-09

1991-02-05

Ng, Jin F.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381 97, 455 43, H04H 500

Patent

active

049912127

ABSTRACT:
A signal conditioning circuit for use in broadcasting a composite stereo signal in the 50 hertz to 53 kilohertz range. The signal conditioning circuit includes a filter for attenuating signals above the 53 kilohertz range, a delay circuit to reduce frequency dependent distortion caused by the filter, and an amplitude limiting circuit to reduce filter introduced amplitude distortion. Use of the signal conditioning circuit results in better utilization of the radio station's allocated transmission frequency and allows subchannel carrier authorization (SCA) use of the modulation frequency range above 53 kilohertz.

REFERENCES:
patent: 3989897 (1976-11-01), Carver

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