Odp: [sdiy] DAC for MIDI2CV

[Ingo Debus]

If you're using a 16 bit DAC, all static errors (those that do not 
change with time) can be nulled out if you use a look-up table that 
contains the *real* (not the theoretical) DAC values for each MIDI 
note. This way perhaps even trimpots aren't required. The look-up 
table can be obtained connecting the MIDI2CV to a precision DVM with 
serial interface read by the MIDI2CV's processor. This procedure would 
surely take some time but hasn't to be done often.

Of course, drift is still a problem.


Seb Francis wrote:
> Mono/Poly mode
> => Mode1 = 3 independent MIDI channels
>    (uses 3 Gate + 3 CV)
> => Mode2 = 2 independent MIDI channels, first channel has gate on note off
>    (uses 3 Gate + 2 CV)
> => Mode3 = 1 MIDI channel, 3 note poly
>    (uses 3 Gate + 3 CV)

Only voltage outputs for pitch? What about velocity and polyphonic 
aftertouch?

Ingo