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I've started with "MIDI guitar" in the late eighties, with the first models and have recently been using the GR-55 (+ GK3 pickups), but I still prefer none of that but rather playing my usual audio signal into some audio-to-waveform converter. These are available as software plugins for those who play through a computer and then there are some new digital amps sporting these algorithms as well. This gives you a direct monophonic synth tone with immediate musicality, i.e. no latency and accurately following how you're shaping the tone on the physical instrument. Some might not like playing monophonic lines but I think that's great for live looping because in a few seconds you can build any chord in a looper by layering the required number of notes. Greetings from Sweden Per Boysen www.perboysen.com http://www.youtube.com/perboysen On Mon, Jan 5, 2015 at 12:45 PM, andy butler <akbutler@tiscali.co.uk> wrote: > > > On 05/01/2015 09:35, Diarmuid Pigott wrote: > >> My own experience of MIDI from strings is that the detection of vibrato >> and bend and gliss is pretty much >> dependant on the MIDI instrument I am using. > > > I think there's a bit of a miss-conception going around. > > The Midi instrument actually has nothing to do with detection, > it only responds to midi commands. > By then the detection is already done. > What *is* important is that the Midi instrument needs to respond > correctly in order to interpret the pitch information correctly. > i.e. the amount of pitch change in response to MidiPitchBend has to be > set > correctly. > That's actually rather trivial to set up, as long as the midi instrument > supports it. > > For a device like the Fishman the situation is a bit different, in that > there may be processing of the audio from the pickup. > In that case it's obviously possible to pass the audio in some form and > get what seems like "perfect tracking", when no tracking has been needed. > > For note detection there's an absolute limit that's never going to be > beaten. > I look at it from a slightly different angle to the usual idea of note > frequencies. > The impulse from plucking the string has to travel up to the fret and > back > to the pickup > before it's possible to calculate which fret was used. > > Using that way of looking at things the Axon system can make a the > quickest > possible > guess at what the note played is, then it uses a more regular analysis to > measure > the frequency. Should the initial guess be wrong a correction is made to > the > Note-On > that was sent using MidiPitchBend. > As the Axon system is patented then it kind of looks like no-ones going > to > get > faster tracking without licensing it. > > Warbling on a sustained note occurs when the fundamental of the note > fades > before the harmonics, > so on some instruments there'll be one or two notes that warble every > time. > Just down to the resonance of the instrument. > If the instrument is specially designed to work with midi convertion I > suspect > they spend a lot of time working removing any 'bad notes'. > > If there's going to be any improvement over the Axon system it won't > be in fast detection of the note, but rather in the ability to > keep tracking a note as it dies away. > > > andy > ps. for playing around, the monophonic devices by Sonuus have somewhat > slower note > detection but are fairly warble resistant. > > > > > > >