The Mini Wave has 8 bit resolution and a 10 volt range. That makes 10 / 256
= 39 mV steps. A semitone in 1V/octave scaling is 1 / 12 = 83 mV. Since
the Mini Wave is used to quantize 12 note equal tempered scales, I must
assume that the range is not truly 10V, but somwhat larger to make the steps
closer to quartertones, or half a semitone, around 83 / 2 = 41.5 mV.
Used as is, the Mini Wave would seem incapable of just intonation. Best bet
would be to expand your CV to the input, then compress the CV from the
output. Even if you constrain this to a 2 volt or 2 octave range, that
still gives a resolution of only 2 / 256 = 7.8 mV. Since 1 cent equals 83
mV / 100 = .83 mV, with this adjustment you could get no better than 10 cent
accuracy, which is terrible even in terms of a poor grade tracking VCO, not
to mention an MOTM VCO which tracks better than 1 cent over the most
critical audio range. Even the 10 cent accuracy is questionable, as it's
likely the combined error between A/D and D/A in the Mini Wave makes it no
better than 7 bit accurate.
My advice is forget about just intonation on the Mini Wave. Just intonation
is best used for harmonic music anyway, and you'd need multiple Mini Waves
for chord quantizing. For single melodic lines it's much easier to use
equal tempered scales of 19 equal, 31 equal, or the Bohlen-Pierce scale.
For just intonation on an analog modular, either use true analog sequencers
(no D/As) or 16 bit accurate MIDI-to-CV converters such as the Encore
Expressionist, adding discrete pitch bends per note.
John Loffink
microtonal@... > I'd also like to see some nice pentatonic modes available too. And I'm
also
> in agreement with the other ideas about microtonal and just intonation. I
> intend on having one Miniwave dedicated for CV processing (quantizing) and
> one for audio wave mangling, but I still haven't received mine yet : (
>