Midi notes inject pitch spread which makes midi notes sound different from touch notes

[RJ-Eckie]

See these pitch calculations:

Touch

plinky_public/sw/Core/Src/plinky.c

Lines 2077 to 2078 in 08dd1e8

	int fine = 128 - (position & 255);
	int pitch = pitchbase + (lookupscale(scale, ystep + root)) + ((i & 1) ? interval : 0) + ((fine * microtune) >> 14);

The position variable has small variations for each oscillator, which detunes the oscillators from the pitch of the pressed pad

Midi

plinky_public/sw/Core/Src/plinky.c

Line 2046 in 08dd1e8

int pitch = pitchbase + ((i & 1) ? interval : 0) + (i-2)*64 + midinote; // (lookupscale(scale, ystep + root)) + +((fine * microtune) >> 14);

The (i-2)*64 term adds a hard-coded detuning of +64 to oscillators 1 and 3. This is a pretty significant spread between the oscillators, while the pitch from touches is generally more detuned from the pad-pitch as a whole, with the oscilatters themselves being closer together

As a result they sound pretty different from eachother