Short demo of Yves Usson’s Voltage Controlled Quadrature LFO

May 15, 2011 · Posted in Uncategorized 

A quick demonstration of Yves Usson’s Voltage Controlled Quadrature LFO.

In this video:

I sent each quadrant into a separate oscillator . The same voltage was split with a “Y” cable and sent to adjacent amplifiers. For instance, if the voltage from zero degree was sent to oscillator one then the same voltage was sent to amplifier two which had the 90 degree oscillator running through it. The voltage from 90 degrees was sent to oscillator two and the same voltage was sent to amplifier three, etc..
This made the quadrature become the delay envelope to the rising/falling portion of the next quadrant pitch only. When the “direction” switch was thrown, the pitch changed direction from rising to descending.
In this demo the voltage control (FM INPUT) was not used. This is a powerful feature which Yves built into the design.



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