Here’s a demonstration of the finished mini-synth in action ... array (there’s more than enough CPU performance for greater polyphony, but it’s mostly just a matter that the input pads ...
A quick search of the archives says this is probably the most polyphonic homebrew synth we’ve seen, and listening to the sound sample on the project page, it sounds pretty good, to boot.
What’s more, Synth can be controlled using polyphonic aftertouch individually ... have the audio-over-USB capabilities found on Tracker Mini and Tracker+ to allow for this.
When it comes to monophonic versus polyphonic synths, the core of everything comes down to the number of voices on a synth, ...