Neon Opto-modulator and Full system demo

Published on Oct 9, 2015 karl welty

"Demo of my optical modulator for a neon lamp ring oscillator. Also a full system demo. Been building many neon synth modules lately but exposed board build with 200 volts is not a wise idea with a curious kitty. I built a see through lid for when I'm not near to discourage her. This represents the first time I've been able to run them indoors.

Video section one - The ring oscillator using four segments hard sync as a low pitched squarewave. As the light spins it changes pitch through the sync chain varying the pulsewidth. Subtle chorusing vibrato, the effect can also be applied to the solo voice if the ring is used as a modulator into it.

Video section two - Arbitrary demo of four elements, pretty much as the knobs happen to have been set. The ring oscillator as a low drone, the base five module being modulated by the LFO, the second squarewave oscillator being modulated by the random pattern generator, and the solo voice run from the keypad with modulation from osc 7 of the ring."