Stereophonic signal demodulation circuit

Details Stereophonic signal demodulation circuit Stereophonic signal demodulation circuit

1979-07-02

1981-07-21

Moore, David K.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

179 1GM, 179 1GE, H03D 100

Patent

active

042801010

ABSTRACT:
A stereophonic signal demodulation circuit receives an input signal including a signal modulated with first and second channel information to separate the first and second channel information from each other. The circuit includes first and second operational amplifiers and at least two switching devices namely, first and second switches for applying the input signal through respective resistors to one input terminal of the first operational amplifier and third and fourth switches for applying the input signal through respective resistors to one input terminal of the second operational amplifier. A control device controls the operations of the first through fourth switches and the first and second operational amplifiers outputs first and second channel information, respectively.

REFERENCES:
patent: 3573382 (1971-04-01), Feit
patent: 3916109 (1975-10-01), Gay

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