Independent sideband AM multiphonic system

Details Independent sideband AM multiphonic system Independent sideband AM multiphonic system

1978-06-05

1986-05-13

Olms, Douglas W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

329167, 332 40, H04H 500

Patent

active

045891273

ABSTRACT:
An improved transmitter for a compatible independent sideband (ISB) AM stereo system develops a phase modulated carrier where the modulation represents the stereo difference signal inverse modulated by the stereo sum signal in accordance with a selected modulation function. The phase modulated carrier then is amplitude modulated by the stereo sum signal. This simplified modulation scheme provides the second-harmonic sideband correction required to develop a true single sideband type signal wherein left and right stereo information are transmitted in separate lower and upper sidebands, which can be demodulated without distortion in ISB AM stereo receivers. Simplified receivers which use inverse modulation are also disclosed.

REFERENCES:
patent: 3068475 (1962-12-01), Avins
patent: 3148342 (1964-09-01), Holt
patent: 3218393 (1965-11-01), Kahn
patent: 3908090 (1975-09-01), Kahn
patent: 4018994 (1977-04-01), Kahn
patent: 4079204 (1978-03-01), Takahashi et al.
patent: 4159398 (1979-06-01), Hilbert et al.
patent: 4184046 (1980-01-01), Parker
patent: 4185171 (1980-01-01), Parker

Affiliated with

Also associated with

Rating

Independent sideband AM multiphonic system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Independent sideband AM multiphonic system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Independent sideband AM multiphonic system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1774497