Module is available as a DIY project only.
This Module is currently available.
6 octaves + 3rd's & 5th's squarewave harmony generator - E&MM Harmony Generator clone
6 octaves + 3rd's & 5th's squarewave harmony generator PCB. Wall to wall Radiophonic Workshop digital gurgling splatter and wibbling action
The circuitbenders Harmonic Engine PCB is a clone of the E&MM Harmonic Generator. This was a project by Paul Williams, published in Electronics & Music Maker magazine way back in 1981.The circuit uses a 4046 Phased Locked Loop (PLL) to track an input signal and generate a squarewave output at harmonic intervals to the frequency of the input. The squarewave can be set to +/- three octaves, and can also produce 3rd or 5th harmonies. That's the theory anyway. In practice, the note tracking only works really reliably if you use very basic waveforms at the input. If you use anything else, then everything very quickly descends into a beautiful kind of chaos, with all kinds of bizarre gurgling digital squeaks and squeals vomiting forth. It's especially effective with percussion sounds, converting each hit into some kind of warped electronic splatter.
https://www.circuitbenders.co.uk/forsale/harmonic/harmonic.html
