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Polyphonic Digitally Controlled Oscillator (DCO) controlled by Raspberry Pi Pico PIO
It's really neat and I'm building one for a test, but a DCO needs modulation. How do you modulate the frequency from an LFO?
What licence does this have?
I don't know if you intended this behaviour but the detune pot is only read when each note is played meaning you cannot setup a nice detune whilst holding down a note. Not normal behaviour for a synthesizer oscillator.
When changing to channels above 1 the midi onover serial midi are ignored. Seems you have a check of the data that limits to 0x90 and not 0x9F to cover all note on channel possibilites.
Could a pair of these be used to make a top octave generator or are there sync problems I'm overlooking?
(or maybe even a few to make a full polyphonic keyboard)
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