Method and apparatus for amplitude limiting a composite signal

Details Method and apparatus for amplitude limiting a composite signal Method and apparatus for amplitude limiting a composite signal

1982-06-24

1984-04-03

Pellinen, A. D.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

307551, 328171, 332 18, 381107, H04H 500

Patent

active

044411995

ABSTRACT:
Two parallel signal paths carry a composite signal having a narrow-band component such as an FM station's composite signal. The first path includes a notch filter that removes the narrow-band component, such as the FM stereo pilot tone, from the composite signal and also includes a reciprocal clipper coupled to the output of the notch filter that selects peaks beyond given maximum and minimum limits from the remainder of the composite signal. These peaks are then effectively subtracted from the corresponding peaks of the composite signal in the second path and the resultant signal is used to modulate the station's carrier frequency. The resultant signal is an amplitude limited composite signal in which the narrow-band component is substantially unimpaired even though the composite signal has been amplitude limited.

REFERENCES:
patent: 3240878 (1966-03-01), Dome
patent: 3290433 (1966-12-01), DeFrance et al.
patent: 3477042 (1969-11-01), Wachs
patent: 3517314 (1970-06-01), Miyagi
patent: 3566281 (1971-02-01), Baumann
patent: 3579274 (1971-05-01), Jensen et al.
patent: 3949173 (1976-04-01), Duval et al.
patent: 4112259 (1978-09-01), Mendenhall
patent: 4134074 (1979-01-01), Hershberger
patent: 4166924 (1979-09-01), Berkley et al.
patent: 4207527 (1980-06-01), Abt
patent: 4246440 (1981-01-01), Van Der Heide et al.
2 Sheets Entitled "STA-MAX Wideband Modulation Controller", (Automated Broadcast Controls).
2-Page Product Sheet Entitled "The WBL Composite Limiter", (ELCOM Specialty Products, Inc.).

Affiliated with

Also associated with

Rating

Method and apparatus for amplitude limiting a composite signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for amplitude limiting a composite signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for amplitude limiting a composite signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-670245