Medium-frequency stereo broadcast receiving circuit

H - Electricity – 04 – L

Patent

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Details

H04L 27/38 (2006.01) H03D 3/00 (2006.01) H04B 1/26 (2006.01) H04B 1/68 (2006.01) H04S 1/00 (2006.01) H04H 5/00 (2006.01)

Patent

CA 2410002

The invention addresses itself to the task of providing a medium-frequency stereo broadcast receiving circuit that does not require any alteration of the radio wave format used in the medium-frequency stereo broadcast system that has become the de facto standard, and that receives transmitted broadcast waves and removes, in the course of the demodulation process, disturbance that has affected the signal during its propagation, thereby improving the audio quality of the demodulated signal and obtaining the full potential of the stereo effect. To achieve this, the received medium-frequency stereo broadcast wave is converted to a single-sideband signal, and the sum signal (L + R) is demodulated from the phase term of this converted single-sideband signal. The difference signal (L - R) is demodulated from the phase term of the received medium-frequency stereo broadcast wave and from the demodulated sum signal output.

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