Stereophonic signal demodulator

Details Stereophonic signal demodulator Stereophonic signal demodulator

H - Electricity

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H03D 3/18 (2006.01) H03D 1/22 (2006.01) H03D 3/24 (2006.01) H03K 17/60 (2006.01) H04N 5/00 (2006.01) H04H 5/00 (2006.01)

Patent

CA 1062342

ABSTRACT OF THE DISCLOSURE A stereophonic signal demodulator includes a frequency discriminator which produces a pair of composite stereo signals in response to an FM stereophonic signal applied thereto, the pair of composite stereo signals having opposite polarities to each other. A pair of stereo demodu- lators is supplied with at least one of the pair of composite stereo signals to produce left and right channel audio sig- nals therefrom., respectively. The other of the pair of composite stereo signals is reduced in amplitude and is supplied to a pair of adders whereat it is correspondingly summed with the respective left and right channel audio signals to eliminate crosstalk components contained therein. In one embodiment, the reduced amplitude composite stereo signal is supplied to the respective adders by a further pair of stereo demodulators. One example of a stereo demodulator comprises a switching-type demodulator having a carrier leak suppression effect.

220101

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