Stereophonic demodulator apparatus

Details Stereophonic demodulator apparatus Stereophonic demodulator apparatus

H - Electricity

03

D

329/2, 179/9

H03D 3/02 (2006.01) H04H 5/00 (2006.01)

Patent

CA 1056465

ABSTRACT OF THE DISCLOSURE Stereophonic demodulator system for demodulating a stereophonic composite signal that includes a subcarrier frequency of at least 38 KHz, the apparatus including: a circuit for producing a 38 KHz switching signal, a circuit for producing a 114 KHz switching signal, a circuit to which the stereophonic composite signal and the 38 KHz switching signal are supplied to obtain a first demodulated signal, a circuit to which the stereophonic composite signal and the 114 KHz switching signal are supplied to obtain a second demodulated signal, and a circuit for mixing the first and second demodulated signals to produce the desired stereo- phonic signal free of any accompanying useless signal.

241715

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