I've made another, less musically interesting video where I demonstrate the basic functionality of the synthesizer. EDIT: I've since made a better demonstration video here for the finals: https://youtu.be/ALa5z5EOo8k

I'm really happy with how this whole project turned out. I wasn't sure whether the Teensy would be powerful enough for polyphonic synthesis of this complexity, but it worked brilliantly. I also worried that latency would be an issue, but I've managed to iron out any problems and latency is currently imperceptible.

I have a few ideas for future improvements, such as adding a save feature for patches, and adding onboard audio recording, but mainly I just want to keep designing and adding modules and experimenting with the synth to see what kind of sounds I can get out of it!