Thanks for your input. That's a good point and one which I hadn't considered to be the case. I figured that if the string frequency had been guessed wrong then the pitchbend data at least would be reliable. Aparently the Zeta Mirror 6 works on this principle. I've been trying to find someone who's used one to pick their brains on its reliability in this regard.
Not to worry though, I can still use piezo outputs for picking intensity and possibly derive pitch shifting by comparing a frequency output from an oscillator set to the derived pitch with the audio from the guitar. A DC bias for string bend may be derivable from that..
Failing all this, Whew!... Some sort of strain/pressure guage on each string may yield the information I need. Though I imagine there would be calibration issues with that one.
We'll see... :-)
> From: firstname.lastname@example.org
> Subject: Re: analogue guitar
> Gareth Whittock wrote:
> > Well keep us posted if you ever get your hands on one Tom.
> > I guess one of these, with its rock solid, super fast note detection and
> > a standard midi interface for string bending and pluck strength would do
> > it for me. It remains to be seen whether it ever comes to market.
> > Then I'd be looking for a left-handed copy... oh dear..
> hi Gareth,
> the standard midi interface, as it exists today anyway,
> is unlikely to behave in the way you expect.
> The Note-On is a "fast as possible" guess, and
> one function of the pitch bend data is to quickly
> correct guesses that were out by a semitone or 2.
> That's why a midi guitar won't play right at all
> if the pitch bend on the detector doesn't match
> that on the synth.
> So a your rock solid instantaneous switching system
> would be messed up by unexpected semitone or tone
> Unfortunately you'll still be relying on the midi
> note-on conversion for accuracy.
> The kind of lookup table you described to sort out
> the midi CC into the right notes would be easy to
> achieve in Plogue Bidule ( in case it's not possible with
> the software you're using).
> It's possible to do pitch detection with Bidule, so you
> could make a hybrid system where the original note
> is got by your hardware switching, and the bend info
> is then calculated.
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