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The CV Tools Module is a versatile voltage processor intended for control voltage manipulation such as adding, subtracting, attenuating, amplifying and offsetting. It can also be used with audio signals to great effect.
It has a cascade architecture. This has a summing stage at each of outputs OUT2, OUT3 and OUT4 (denoted by the ? symbol); OUT1 is added to OUT2, OUT2 is added to OUT3 and OUT3 is added to OUT4.
Consequently OUT1 is just from channel 1, OUT2 is the sum of channels 1 and 2, OUT3 is the sum of channels 1, 2 and 3, and OUT4 is the sum of all four channels. However, when a patch lead is plugged into any, or all, of outputs OUT1 to OUT3 it disconnects that output from the next channel’s output summing stage.
It is a polarizing mixer which allows an input signal’s level to be adjusted or inverted. Each channel has a basic gain of 2 and therefore an input signal can amplified by up to a factor of 2 or inverted and amplified by up to a factor of 2 (i.e. -2). This is useful for adding and subtracting signals in varying degrees.
This could be used to add portamento to a VCO control voltage; blending one pitch into the next. This is also called lag or glide on other synthesizers. In the MIN position there is no noticeable slewing but in the MAX position it takes just over a second to ramp up or down to the next voltage step
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