I am interested in developing an Audio to Midi converter for guitar as a VST. I am new to KVR and have already found some great resources. Im looking for any kind of open source VST that I could look at to get me started. I will be working with a DSP professor to get a better understand of the DSP needed to code this kind of plugin.
I think the best thing would be to start from an open source guitar tuner vst. Does anyone know where I could find one?
Thanks
Audio to Midi converter
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- KVRAF
- 8563 posts since 2 Aug, 2005 from Guitar Land, USA
I think Christian Budde has done some guitar tuner stuff, and definitely has some of it open source. His site is saviourofsoul.de, look for a large thread in this forum for the open source stuff, might be at a different page.
The only site for experimental amp sim freeware & MIDI FX: http://runbeerrun.blogspot.com
https://m.youtube.com/channel/UCprNcvVH6aPTehLv8J5xokA -Youtube jams
https://m.youtube.com/channel/UCprNcvVH6aPTehLv8J5xokA -Youtube jams
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MeldaProduction MeldaProduction https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=176122 - KVRAF
- 14339 posts since 15 Mar, 2008 from Czech republic
You should probably google DFT (and particularly STFT). Basically you will split the signal into frequency bins, detect the major ones (this is gonna be the biggest problem, since you will have to remove harmonics, and there will be lots of them 
) and just convert the frequency into MIDI. Also check a "pitch-change" algorithm, I'm not sure where it is, but it was related to STFT and source code was pretty self-explaining and may help you a lot.
) and just convert the frequency into MIDI. Also check a "pitch-change" algorithm, I'm not sure where it is, but it was related to STFT and source code was pretty self-explaining and may help you a lot.