Differential sampling circuit for improving signal to noise rati

Details Differential sampling circuit for improving signal to noise rati Differential sampling circuit for improving signal to noise rati

1983-06-17

1984-10-09

Witkowski, Stanley J.

Music

Instruments

84 123, G10H 108

Patent

active

044754302

ABSTRACT:
The present invention is a differential sampling circuit for improving the signal to noise ratio by eliminating d.c. level distortion in square wave signals used as components for forming a stairstep or bright wave signal in an electronic organ having multiplexed keying. The multiplexed drawbar signals for even footages at both sides of a sampling resistor are demultiplexed, applied to a sample and hold circuit and applied as inputs to a differential amplifier to cancel any fluctuations of the d.c. signal component.

REFERENCES:
patent: 3534144 (1970-10-01), Ring
patent: 3626076 (1971-12-01), Uchiyama
patent: 3636231 (1972-01-01), Schrecongost et al.
patent: 3748944 (1973-07-01), Schrecongost
patent: 3755609 (1973-08-01), Millet et al.
patent: 4134321 (1979-01-01), Woron
patent: 4141270 (1979-02-01), Schrecongost
patent: 4227432 (1980-10-01), Bagus

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