[sdiy] Thoughts on a Polyphonic Synth

[jure zitnik]

that's exactly what i've been thinking about for the past weeks.
my idea is to design voice modules that include something along the lines of
- 2x VCO with saw/tri/sqr/sin + SUB (shaped?)
- 2x 2pole SV VCF that can be cascaded into 4pole (with variable spacing)
- 3x ADSR EG (for each VCO and for VCF)
- 2x LFO
- 2x VCA

and then you could stack as many as you want to get polyphony of your choice.

i've got a whole bunch of ideas but since i'm a total n00b i'll learn
some more before writing about it :)

jure

On 3/24/06, harrybissell <harrybissell at prodigy.net> wrote:
> You would need to duplicate all the modules that you wished for
> in one voice.  8 eg for the VCF is probably a bare minimum.
>
> You probably would like 2 VCO per voice...
>
> And a way to keep them all in tune. Usually they use a computer
> to measure the frequency error and compensate per MIDI note number.
> Lookup table kind of thing...
>
> One thing that is NOT obvious... making a very complex single
> voice (like for a mono patch) will not be so satisfying in a poly.
> It will either get 'muddy' sounding... or blend so well that it
> is totally smooth
>
> H^) harry
>
> Benjamín Velasco wrote:
> >
> > Hi list!!!
> >
> > After looking the amazing midi projects at www.ucapps.de i was
> > wondering how difficult it would to build for example a 8 note poly
> > synth. With the MIDI to CV from this page you could have 8
> > independent for each oscillator. Then you would need perhaps 8 EG
> > and 8 VCA for each note's volume? What other module you i have to
> > repeat? Maybe 8 EG for VCF??
> >
> >
>