New project: Sequencer

[cyborg0 at GlobalEyes.net]

jhaible wrote:

> 
> Quantizer:
> I want to build a quantizer where I can select which chromatic tones I want
> 
> to include and which I won't, with a set of 12 individual switches.
> I guess I'll do this with a normal binary counter and resistor network
> (main
> DAC), and a second divide-by-12 counter plus 4067 MUX and a separate
> resistor network for the semitones (semitone DAC). The two DAC outputs
>

this is pretty complex as far as parts count..Also, too, there is a TON
of knobs this way..
I have though, perhaps, that one could have 1 knob, 1 octave switch, and
16 write toggles going to 16 different S&H's..
basically, you would feed the voltage info from the knob/octave select
into one (or as many toggles/buttons as you can mash at once!) or more
sample and holds...

As far as having a "scale" type note excluder, that would be rough.
I mean, what would happen to the notes that are the same as the ones you
want to exclude?
I mean, you could have a bunch of comparators check to see what voltage
on the cv is equal to an excluded voltage and then have it inhibit the
gate so the note is not heard, OR, you could have it so that it forces
the cv to the nearest (up or down) non-excluded CV value..
This is actually a good idea here.. :))
I gotta remember this..thanx for making me think..
rob