Reply To: Wave Pitch editing?

I think the dirac2 thing is the easiest one, licensing wise.
Their free version allows one channel operation for both commercial and non-commercial use.

(They say you can use this on multichannel audio by using their object on each channel seperately. The quality of the pro and “more pro” version will most likely be better because they process the channels all at once)

I don’t think the algorithm should be state of the art good, but some timestretching will be nice, especially if it comes with an ableton live like warp marker interface. That allows you to correct minor mistakes in recordings, and those should be so big that you start hearing artefacts.