I’m trying to produce a bass tab from an MP3 file downloard from YouTube and am experiencing some inaccuracies shown in the screen shot. My process is shown below if anyone want to duplicate it. Thanks for any suggestions.
www.youtube.com
Questions:

The Fortunes - You've Got Your Troubles, I've Got Mine
The Fortunes - You've Got Your Troubles, I've Got Mine

- Download the YouTube and convert to MP3
- Drag the MP3 file into S1 and normalize it
- Detect the tempo, display the tempo track and drag the Audio Track onto the Tempo Track.
- Notice that the tempo is not constant, delete all the tempo points and set the first point to 133 BPM to force a constant tempo.
- Open the Marker track and set the End Flag at Bar #114
- Activate the metronome and display the metronome settings
- In the metronome settings, render the click from Timeline Start to Song End
- Drag the beginning of the Audio Track to Bar #2 and play both to verify that the click and audio tracks are synchronized
- Right mouse click the audio track>Audio>Detect Chords
- Open the Chord Track and drag the audio to the Chord Track
- Right-click the audio, Separate Stems and select Bass
- Normalize the bass stem
- Visually notice any gaps in the bass stem and play it to confirm. Bar #19 is an example of some missing bass notes
- Select the bass stem and Ctrl-M to bring up the MIDI info in Melodyne. [Side note, when I did this, it did create the MIDI info but also took me to my web browser and brought up a page saying that Melodyne version 5.4.2 is freely available. This surprised me as I thought Studio One updates would automatically include Melodyne updates. I chose not to upgrade Melodyne in this way and at this time.]
- We now have the Melodyne “blobs” visible, close that window.
- Create an Instrument Track, name it “MIDI Bass Guitar” and select “Existing”.
- Drag the bass stem onto the just-created instrument track
- Display the browser Instruments>Presonus>Bass> and drag “Fingered Bass” onto the MIDI Bass Guitar Track
- Mute all tracks except the MIDI Bass Guitar track to verify we have sound. A bass sound was confirmed.
- Double-click the MIDI Bass Guitar track to bring up the piano roll and on the “Track” tab, pull down the “Apply Staff Preset” menu and select Guitar/Basses and Electric Bass.
- Click the Full Score Page Layout button
- Save the tab in PDF format by clicking the Print tool and select “Microsoft Print to PDF”.
Questions:
- How can I help S1 improve the accuracy of the generated bass tab? Would pre-processing the audio track with low-pass filtering or noise reduction help?
- Is there a better process than what I’ve shown above?
- I’m assuming that the Presonus programmers trained an AI algorithm on hundreds of songs for it to separate bass stems. If this is true, does it make sense to suggest to them to incorporate a knowledge of music, music theory and how bass players play bass into their algorithm? The tempo, chord progression and genre of music could be inputs for this.