Polymath – Analogue Solutions Polymath User Manual

Page 13

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Polymath

Analogue Solutions | Circuits – Main PANEL

There are four VCOs. They can all be used together to make sound, or just some can be
used for sound, and others as modulation sources.

All four VCOs are essentially the same. VCOs 1 and 3 are identical, and 2 and 4 are
identical. 1/3 and 2/4 are almost the same. VCOs 1/3 and 2/4 have some slight different
controls.

First we will go over what they have in common.

TUNE

Sets the initial Pitch of the VCO.

PORTAMENTO

This control sets the time it takes for the pitch to change from one note to another. When a
new voltage is set to change the pitch of the VCO, is will glide from the old note to the new
note.

When set to zero, then there is no portamento, and pitch changes will be instantaneous.
Gradually turning clockwise increases the time.