Odds N Evens I

YouTube via wonkythomas
"X & Y are two bi-polar voltages (~+/-7.5V) which pass thru a network of high & low-pass filters. A pair of logic inputs, A & B, determine the point at which each of these voltages enter the filter networks. The outputs of the filters are then summed together & another pair of pots allow the output voltage to be altered without X & Y being changed.

In a way the two sets of pots can be seen as 'Intial' & 'Fine Tune'
In use its a little more oblique than that, altho the effect of turning a knob are fairly intuative.

The two LEDs on the breadboard show the +ve & -ve swing of the output voltage & do a good job of showing the way changing the various settings allow a transition from "stepped" to "smoothed" voltages.

"Odds & Evens" refers to the way in which the outputs of the high/low-pass filters are combined so that there is an equal amount of change between the two initial voltages over time.

The A & B logic control inputs are using the same signals to trigger envelopes altering timbre, hopefully illustrating the possible relationship between rythm & pitch."

Odds N Evens II


Update:

Odds N Evens III

"Last one for now... trying to show off the 'Fine Tune' control... fine tune is a real misnomer I will have to think of something else to call it... maybe just 'Variance' obtuse enough? Anyway, its the pot with the blue knob sitting there.

About 2 mins in I put an octave drop on one of the VCOs... nothing to do with this module but it sounds soooo cool!!

I hope this makes the purpose of this device abit clearer; take two gate sequences, set two pots to create a region of possability & let it rip! Nudge another control to move area of operation around & let it do its thing. I'm using pitch CV in the videos because its the easiest to understand without 'being there' but there are all kinds of other potential uses.

Take a kick & snare pattern from your analog gate sequencer & use those to control this module, the two CV outs can then be used to subtly alter the drum sounds in time, all related to the actual patterns being played. Take two gate outs from 2 seperate analog sequencers, have their CVs controlling pitch as per usual, but use the CVs produced by the gates to add accents or rythmic vibrato, or use the CVs to alter timbre via waveshapers or VCFs... all related to patterns already existing in the piece.

Having two seperate controls for the limits of operation means a wide or narrow set of differant voltages can be generated, as you can hear a great many notes can be created from a pair of pulse trains."