False harmonics suppression, possible?

[edellaq]

First of all, I'm quite enthusiast about this project, although I'm absolutely out of the hardware electronics world.
One thing that I'm curious about (being a tripleplay user and having been a GK3 owner too) is if there is a reliable method to avoid the false harmonics.
I tried TP mainly for transcribing, but there is a compromise between sensitivity and false notes detection, that sometimes makes me lose more time editing the score than entering the notes manually.
Is it possible to set up a steep band pass filter for any string, and eventually also make some additional digital processing to avoid this problem?
I use at the moment a neoprene dumper at the bridge, and light string gauge (009) on my stratocaster, that kinda works, but playing that way is a nightmare... absolutely not good for capturing even a brief realtime performance. I use it for inputting and editing short phrases.

[djowel]

Could you post a raw wav files that exhibit what you are saying? In one track, record the raw audio coming from the guitar (no effects, no EQ) and in another track, record the synthesized output using a simple sound patch (e.g. synthesized triangle wave). Also, please prepare a brief description (readme file) of the audio file(s) with annotations where the false notes detection are (e.g. 0:30 false harmonic, 1.45 ghost note).

[edellaq]

I don't know if I'm able to... I'm using only the MIDI pickup, with no output jack connected.
Being a transcribing tool, the output I see from the TP app is only in the notation program, that sometimes receives a 2 octave higher midi note.
Is't quite easy to trigger these "false notes", due to poor playing technique, but also could be intentional articulation.

I just noticed the https://www.cycfi.com/ website, and I remember I had a peek in the past (but already bought the Fiskman TP)...
Are you trying to enhance the XR-spectra pickup? Or something like that? Would be a great improvement!
And there would hopefully be some documentation about the API to interface with webmidi JS library... or am I out of track?

[djowel]

This is a hardware project, although of course it will also include software, but for the low-level drivers, etc. There's no API to interface with webmidi JS library. Those are outside the scope of the project.

[Susorl]

Hi, I want ask if the problem comes with notes of different strings, intercrossing detection, or it's the harmonic of the same string, one octave higher?

In general, the guitar to MIDI conversion has traditionally a lot of different issues. It generates ghost notes here and there, especially with some hand/picking techniques. Optimization is possible of a particular problem.