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How do I convert audio into midi (I'd like to convert my guitar playing into midi)?

I have looked but found only shareware like this: http://www.widisoft.com/english/widi-audio-to-midi-au.html .

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a related question: stackoverflow.com/questions/1897023/wav-to-midi-conversion –  Colin Pickard Jun 10 '10 at 9:17
    
which format is your source music in?? ie is it .wav .mp3 or what?? –  CVS-2600Hertz-wordpress-com Jun 10 '10 at 9:19
    
Note that "audio -> MIDI" is not like ".wav -> .mp3" but rather more like voice recognition. –  Colin Pickard Jun 10 '10 at 9:27
    
I fear you won't find a library for audio to midi. On the other hand, if you just want to create midi sequences playing a guitar, you can buy an hexaphonic pickup or a guitar-like midi controller. I'm rather happy with the Yamaha EZ-AG (hard to find in shops now, I bought it on Ebay for 80€) –  Remo.D Jun 10 '10 at 17:26
    
Thanks for the related question Colin. I know how midi work, what I precisely want is to extract rhytm and notes from a recorded single instrument (with a mic or pluged in a line in). (And I need a software only solution, beside the mic). Anyway, thank you all for youre help (and sorry for my bad english ...) –  Katoss Jun 11 '10 at 12:56