I've got a bass guitar track that is not rhythmically solid. He is playing eight to the bar at 155bpm. A very high percentage of the notes are off by a tiny amount, but the MIDI drums are, of course, bang on, so the incorrect timing on the bass is noticeable.
I've never used Audiosnap, but this is a long-distance collaboration and I don't know if I can get the guy to play his part again. I have tried many settings -- threshold, resolution, stretch method, manual editing, quantize (note durations, audio snap beats, etc) different amounts of "swing" and have come pretty close to "fixing" this track, but something always goes wrong, Like there is an extra transient detected that I can't get rid of, or a transient is missing. When I play back sections where these things occur it sounds worse than when I started. Note that if I could get this working I wouldn't mind editing the whole three minutes manually, nor would I mind if the track ends up "perfect," i.e. mechanical sounding. The song won't suffer.
Is there a clear tutorial somewhere on how to do this? It seems to me that anyone who's tried to edit a track for timing must have run into the same glitches. I have been at this for a few hours now, and I would welcome any tips or ideas.