Signal generator for electronic musical instrument, employing variable rate integrator

For use in an electronic musical instrument, a signal generator for generating a single cycle of a triangular waveform, comprising integrator means, comparator means connected to said integrator means and responsive thereto for producing two discrete output voltage levels in response to a comparison of the output of said integrator means with a certain value, means connected to said integrator means and operative to control the sign of integration of said integrator means, said sign of integration being opposite for two successive integration periods, and means for discontinuing operation of said integrator means after a single cycle of operation including two successive integration periods.

For use in an electronic musical instrument, a signal generator comprising variable rate integrator means, means connected with said integrator for controlling the sign of integration of said integrator, said sign of integration being opposite for successive integration periods, a potentiometer, first connecting means for connecting a first end of said potentiometer to a source of reference potential, second connecting means for connecting a second end of said potentiometer to said reference potential, means for connecting the tap of said potentiometer to said integrator for supplying a signal to said integrator means for controlling the rate of integration thereof, and means for operating said first and second connecting means one at a time during successive periods of operation of said integrator.