I often practice playing the guitar or learn some riffs by ear along with a song. I know many people do that.
I import the song to Ardour and use varispeed with x42 “repitch” plugin. I can slow down source song a little to practice or learn it.
The problem is, where would that correction happen? on each track and bus? master-out? monitor-out?
PS. A built-in solution would also have to be perfect; reliable accurate latency and sound somewhat good. The repitch-plugin I hacked does not satisfy either criteria (which is also why it’s not officially released).
I guess nothing is going to replace my EH Pitchfork yet The Guitarix pitch shift sounds good to me as well, but I feel it has a bug somewhere that I have yet to convince the owner I’m a big brummer fan.