Originally Posted by AudioTrack
If a skilled musician could determine that the note is definitely an Eb, then I'm convinced that AI could deliver the same or better.
That sounds more like extracting the notes, e.g., as MIDI, rather than isolating the stems, which is what BassThumper was asking. For me, "the stems" means the actual sound of the bass extracted from the audio. I suppose one way to get a clean stem might be to identify all of the notes and articulations and convert that to MIDI and identify a suitable-sounding instrument and creat a MIDI+VST track that does a good emulation of the stem. I.e., creating a new stem that sounds very like the one from the song. One would certainly get a clean output.

How far it could go with other sound sources is another question. If one extracts the voice, translates that to MIDI and allies that to a vocal VSTi, how close can one get to a clone of the original. I guess if the original singer has good voice samples out there, possibly pretty close.

Originally Posted by Bass Thumper
... an AI to "properly" separate the bass stem. But remember, it doesn't have to be perfect, just good enough.
... and rebuilding would satisfy that.

When does an extracted stem become a straight forgery?

Suppressing the original bass in the remainder of the recording remains an issue due to artifacts from the bass that 'look' to the software like articafts of some other sound.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.