[sdiy] Tuneable CV Quantizer

[jhaible at t-online.de]

> another pot to set the output level. Let's see 64 notes, 
> 128 pots. Cool! 
> Okay start out with a 16 step version.
> 
> Real synthesizers have lots of knobs.


Do it like ARP (sequencer) and Yamaha (CS-80):
Use two partial DAC circuits, one for semitones and one for
ocatves.
Then make the semitones adjustable. (12 pots)

Or do it like Sequential Circuits (Prophet 5, Rev. 3):
Use an ordinary DAC with reasonable resolution,
and adjust the semitones in software.
(The P5 uses 12 of its front panel pots for programming
alternative tuning in a special mode. I've forgotten
the details, tried it only once.)

JH.