Sep 17 2013 | 5:50 pm
    can anyone help me if there is anything i can use to build an audio microtuner in max? i would like to play my guitar in alternate tuning systems, and the FM8 midi microtuner is pretty good (http://dubsahara.com/wp-content/uploads/2010/08/HIJAZ-MIDI.jpg), but it's not good for audio singnals, and i don't want to use midi pickup..
    thanks for your help!

    • Sep 18 2013 | 9:00 am
      alternate tunings require splitting the guitar strings into discrete audio streams so they can be re-tuned individually, otherwise you would simply be transposing the entire range en masse. This is not trivial and would require either a hexaphonic or midi pickup. To process the monophonic audio signal purely in Max would be even trickier and certainly beyond me.
    • Sep 18 2013 | 9:20 am
      no, it's not needed to split the guitar strings, it would be a simple monophonic pitch shifter, that would shift out of the equal temperament system
    • Sep 18 2013 | 10:31 am
      you will need to split the guitar strings to achieve what you are currently describing. If you simply wish to pitch shift a monophonic melody line (regardless of the instrument) then you should not refer to "alternate tunings". This is confusing. Monophonic pitch shifting is easy. Is this what you require?
    • Sep 18 2013 | 11:06 am
      why not? it would be simply a melody line in for example just intonation, and that's not ET
    • Sep 18 2013 | 11:42 am
      Ok, now it's clear, you wish to re-tune individual pitches to reflect alternative monophonic tunings.
      This isn't my area, but there have been several threads here on the use of alternative tuning systems; have you tried the search dialog above top right? "Equal temperament" might be a good query to start with, and see where it leads you.
    • Sep 18 2013 | 6:55 pm
      There is also ol.autotalent~ for auto tune effects. I forget if you can adjust the tunings individually.
    • Sep 19 2013 | 8:49 pm
      you basically only need to translate the note values to frequencies for one octave, then you can * 0.5 and *2 the rest.
    • Sep 20 2013 | 2:04 pm
      Your approach to retune a string only works nice if you are significantly louder than the original sound of the guitar...;-)
      ol-autotune~ would tune you to an equal-tempered scale. But out of the description of Thomas Baran (http://tombaran.info/autotalent.html). You can try to patch it together with fiddle~ and some pitch shifting...
      And you should definitely look into the Magic Microtuner:
      I would probably tune the open strings to harmonic thirds relative to your fundamental (the interval which is lowest compared to equal temperament) and bend all other pitches by ear... I know, its hard with chords...;-) Or get a fretless guitar... For sure it will sound better...