[sdiy] Control volt into computer over soundcard?

[Iain Duncan]

> You haven't said what CV you are concerned about.  Pitch?  Breath
> pressure?  Jaw force?

The goal is to control high res csound synthesis with the cv outs from
the EWI 3020, so I believe ultimately there will be a bunch, but to get
it going at a minimum it will be bite, breath, key, and octave roller. I
haven't received the thing in the mail yet, so I don't yet know the
specs on its cv outs!

> The standard way to use audio to transmit LF data is to use FM.  You
> will need very good resolution whatever modulation scheme you use to get
> accurate pitch data.  That's why two signals are often used  (octave +
> suboctave (Steiner), or scale + pitchbend (MIDI)).

Can you point me at any resources on the above or give me any more
details of how it is done?

> Why not go all analog?  My hybrid synth is optimized for wind control
> and allows patch storage.  Way better than most MIDI setups, from what I
> have seen.  :-)

Well, I'm a Csounder, but I am interested in making hybrid Csound CV
analogue synth patches. So eventually I'd like to get high res cv back
out from the computer too. =)

>   Ian
> http://home.earthlink.net/~ijfritz/index.htm
> 

Thanks
Iain