midiDAC firmware

[Harry Bissell]

I don't do these boxes... so that should make my opinion more informed :^)

Separate Pitch-bend outputs can be more accurate than Software controlled, for a
given DAC. If we picture midi, that's a 7 bit number for note plus a ??? 14 bit
pitchbend (its two bytes isn't it?). Add these together and you'd need a much
better DAC, but if you sum them offboard, a cheap DAC will do. And the Scale
Factor for bend is important, was that one whole step, or one octave ??? This is
a simple attenuator in hardware.
In software you need a good user interface...

OTOH: If you have a Computer sitting next to your synth... then why not do it
all in software !!!

:^) Harry

Mikko Helin wrote:

> On Sat, 4 Dec 1999, Trevor Page wrote:
>
> > Please check out the midiDAC on Tony Allgood's website:
> > http://www.techrepairs.freeserve.co.uk/mididac.htm  - It too uses a simple
> > PIC for which I wrote the software. PCBs and PICs available from Tony. I
> > have a prototype PCB for this design and... wow.
>
> Yes, Tony PCB's are great at least the Superladder PCB which I've got,
> too. Wonder where he makes them for such a low price...
>
> Anyway, there's no firmware available?
>
> Another note: I've been wondering why people design / build MIDI to CV
> converters with separate outputs for pitch, velocity, pitch bend,
> MIDI controller x etc. as it would be more obvious to have CV outputs with
> software summed and controlled CV outputs. So just one CV output / module
> would be needed. So a MIDI CV converter with 8 outputs
> could control 8 CV controllable units, like for VCO only one
> CV is needed, and that includes MIDI key, pitch bend and
> possible software LFO and EG, random note generation (S/H),
> arpeggiator etc. For each CV out there could be independent
> EG, LFO, random number generator or other software feature,
> and these sw features could be added later when the basic
> functionality is first implemented.
>
> -Mikko
>
> >
> >
> > Best regards - Trev
> >
> > www.resonance.fsnet.co.uk
> >
> >