a bit of advice for anyone using this feature and enjoying a better experience:
This feature is monophonic: as in 1 note at a time, monophonic instruments will give you better results, ie. flute, sax. Polyphonic instruments will work as well but you have to stop sustaining notes before you play the next.
Each triggered note will allow you to pitch bend a little before suddenly jumping to the next midi note message. A smooth note glide is not possible.
This feature detects notes in relation to their actual wavelength. This means it will have a hard time recognizing lower pitch notes and will have a higher latency (delay between you playing the note and aubio recognizing it) A solution if you want to play lower registers comfortably with minimum latency is to play 1 or 2 octaves above the intended notes and to transpose the midi data afterwards.
As you can see, there are different methods for onset (note-on) and pitch detection, and also a few parameters.
Aubio project is quite active, so perhaps there are new improvements or features that are not present in the Gorgona imageās version, that was compiled in December. In such a case, you could update to the last version. There is a recipe script (/zynthian/zynthian-sys/scripts/recipes) that could help you with this.