Isolation of different human voices from audio https://dsp.stackexchange.com/questions/21605/separate-two-voices-from-a-speech-signal
Several years ago it was hard to extract voice from music and almost impossible to separate two human voices from mixed stereo or mono tracks. With AI algorithms' aid there are many services allowing separation of voice/music or even different kinds of instruments. Is is possible now to separate two human voice from one track now?
Or, two make things easier, if one singing (score provided) and one talking, how should it be done, manually or automatically, without losing too many overtones and reducing quality?
