MIDI->CV and controller

[Rene Schmitz]

At 15:48 08.03.99 -0500, you wrote:
>
>What I would love to see is an eight channel DAC for my PC. Then, if
>I want MIDI->CV I can code it myself. Or if I just want to skip
>MIDI I can do things like LFOs without having to quantitize them
>into CC messages. I could also use channels to implement software
>ADSRs or n-stage envelope generators.

I've done something similar, a CV interface for the PC, which has a DAC
connected to the parallel port. See http://www.uni-bonn.de/~uzs159/cvmidi.html
Its only single output at this time but I plan to add an output multiplexer
and S&Hs for multichannel use. The nice thing about this is the driver,
that implements a midi-port for wind*ze.I've just shortly dreamed up the
possibility of "software modules" which output their cv's via such an
interface. 
But I wonder how precise a software LFO would be, if run under a
multitasking environment.

>
>Does anyone know of anything like this? Could I possibly use cheap
>soundcards for two channels. Will they go down to DC?

I think this depends a lot on the partucular model, but in general these
tend to have output caps. In case you find a suitable card, you can of
course hack into the cvmidi-driver (which in is just a hack of Zoltan
Janossy's midirouter.)

Bye

 Rene


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