Rectangular waveform signal reproducing circuit for electronic m

Details Rectangular waveform signal reproducing circuit for electronic m Rectangular waveform signal reproducing circuit for electronic m

1977-02-14

1978-10-03

Schaefer, Robert K.

Music

Instruments

84 103, 307261, 328 32, G10H 100, H03K 513

Patent

active

041177576

ABSTRACT:
A rectangular waveform signal reproducing circuit for electronic musical instruments which is composed of a first charge-discharge circuit having a relatively small charge time constant and a relatively large discharge time constant for charging and discharging positive components of a monophonic signal, a second charge-discharge circuit having a relatively small charge time constant and a relatively large discharge time constant for charging and discharging negative components of the monophonic signal, first comparing means for comparing the monophonic signal with the output from the first charge-discharge ciruit to produce a first compared output representing that the level of the former is larger than that of the latter in the positive direction, second comparing means for comparing the monophonic signal with the output from the second charge-discharge circuit to produce a second compared output representing that the level of the former is larger than that of the latter in the negative direction, and a flip-flop having first and second input terminals respectively supplied with the first and second compared outputs to produce a rectangular waveform signal having the fundamental period of the monophonic signal.

REFERENCES:
patent: 3636457 (1972-01-01), Hart
patent: 3745367 (1973-07-01), Schindler
patent: 4041894 (1977-08-01), Kimmich

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