[sdiy] lookup table as expo converter

[Tim Ressel]

Ingo, et al:

I think the main concern with MIDI is the inherent
quantized nature of the note selection. Of couse,
people with analog synths with MIDI interfaces seem to
get around it. I suspect you could use Note On
messages for main note selection, and use some
pitchwheel stuff to make it 'not so perfect'. Also
some slight glide in the transposition might add a
natural sound.

I am leaning towards a 12-bit ADC for main CV, and
using the built-in 10 ADCs for modulation. I'm still
struggling with MIDI. It appears the folks who made my
controller never spoke with the people who wrote the
software I'm using.

--TimR


--- Ingo Debus <debus at cityweb.de> wrote:
> 
> Am Dienstag, 25.05.04 um 17:16 Uhr schrieb Paul
> Maddox:
> 
> >
> >> Wouldn't you be better off with just a MIDI
> input?
> >
> > not if you wanted to make it part of a modular
> synth.
> >
> 
> Then I'll ask the other way around: does an
> inherently quantizing CV 
> input to an oscillator make sense? Either you have a
> "continuous" CV 
> source, like a LFO, ribbon controller, theremin
> controller, whatever, 
> then you don't want a quantizing input (at least not
> one where 
> quantisation cannot be turned off). Or you have a
> "discrete pitch 
> control" source, like a keyboard or a digital
> sequencer. But then the 
> control data are generated in the
> digital domain anyway in most cases. Why convert
> them to a CV when the 
> oscillator or digital expo converter needs digital
> data anyway?
> 
> I was thinking about the possibility to use the
> newer Atmel controllers 
> with their large programmable timer arrays as quad
> (or even more) DCOs. 
> But it would be quite an effort to have CV inputs,
> while MIDI input 
> would be easy.
> 
> Ingo
> 



	
		
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