Asymmetrical sideband am stereo transmission

Details Asymmetrical sideband am stereo transmission Asymmetrical sideband am stereo transmission

H - Electricity

04

H

325/48

H04H 20/49 (2008.01) H04H 20/72 (2008.01) H04H 40/36 (2008.01)

Patent

CA 1285031

ASYMMETRICAL SIDEBAND AM STEREO TRANSMISSION ABSTRACT Asymmetrical sideband amplitude modulation (AM) stereo transmission apparatus which transmits left (L) plus right (R) stereo information (L+R) in one stereo channel and a signal including L-R stereo information in a second stereo channel. Benefits include significant reduction of modulation envelope distortion in null regions of the transmitter's antenna radiation pattern and improved quality of reception in the presence of adjacent channel and co-channel interference, easing of the difficulty in tuning continuously tuned receivers and improvement of the fidelity of such receivers when side tuned, while at the same time providing a signal which, when received and decoded by an independent sideband AM stereo receiver, provides pleasing stereo effects.

568531

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