[sdiy] scales for a pitch voltage quantizer

[Wilfried Dietrich]

harry bissel wrote:
> The minor / major and Major / minor scales are very
> useful. This is several octaves of a major scale then
> reanspose into the relative minor. So for CV for 0-2
> volts its major and 2-5 volts is minor.

Interesting. I guess the output voltage jumps back to
0 volts when the lowest minor note is selected ?

Ingo Debus wrote:
> IMHO this is a very small choice. If there's a micro in there anyway,
> why not make the scale (user) programmable? I  wouldn't even restrict
> the scale to equal-tempered intervals. Having only 12 scales seems quite
> preset-ish to me, not in the "spirit" of a modular synth.

:)
To be true, I have expected to hear this argument.
But the ATtiny15 is a physically very small controller. It has only
8 pins and I have to use an ADC-Input to select the output scale.
I think for a controller with only 1k Flash-ROM and 32 byte RAM a
yield of 12 different scales is not too bad, at least for me ;)
On the other side a random definable scale would require 
12 switches (one for every semitone) on the front plate which
means it has to be a large module. With my design I can fit two 
of these quantizers into one small module.

Wilfried