[sdiy] MIDI to CV plan of attack

[Sowa Roman]

multiplexing CVs are driven from one source, hence all voltages have
the same nonlinearities, range etc, so driving VCOs with separate
outs sounds like they would be wired together. But they need a little bit
of filtering to remove switching noise/ripple. That slows down the response.
But OTOH, who needs so fast CV jumps anyway...

with separate DACs you can use expensive accurate (16-bit?)
DAC for things like VCO CV etc, and cheapo 8-bit DACs for other
stuff. And once they're updated, you can power down the microcontroler
and wait for another MIDI message. Poor multiplexing guy has to
work all the time

Roman

__-----Original Message-----
__From: Daniel Kruszyna [mailto:krus3669 at kettering.edu]
__Sent: Monday, May 27, 2002 4:13 AM
__To: synth-diy at dropmix.xs4all.nl
__Subject: [sdiy] MIDI to CV plan of attack
__
__
__Thanks for all the info on different solders.  I am now contemplating
__the strategies of MIDI to CV conversion.  Some designs use 
__separate DACs for
__each signal and others use one DAC and a demultiplexor.  I 
__suppose the latter
__is strictly for cost purposes.  Are there any noticeable 
__artifacts when doing
__it this way?
__
__-- Daniel
__
__
__
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