I'm working on an American movie that was dubbed in German for PAL. Since there is a lot of music and singing it was pitch corrected to sound right at PAL speed. Now we're doing a blu ray version at NTSC speed (slower). Obviously since there was pitch correction introduced into the PAL the NTSC will be not only slower and a lower pitch but slightly off key. I can correct with my Pro Tools audio suite Pitch Shift, (1.047:1 with speed correction) but there are anomalies. I'm hearing pulsing in steady notes and some my tracks drift and create echos. My Accuracy setting is at zero. I know there is software and plug-ins that do this job much better. Any recommendations?
Seratto Pitch 'n Time has been the defacto plug in for this type of work. However, you will still have some aretfacts as a result of this process.
I am assuming that this is something like an old MGM musical or the like, where the singing wasn't dubbed in German. If so, I would suggest doing so editorial - using the non pictch corrected NTSC English for the musical numbers and the German newly pitch corrected track for the remainder of the film.
I have learnt that there are variances in the algorithms used for the same function by different Audio Products. You can use the same Auto Pitch correction in Adobe Audition. I am sure these look familiar to you. In Audtion you can access this by Selecting the Sound Clip and Effects -> Automatic Pitch Correction
If you think you have Pitch Shifts (Pitch is changing linearly as a function of time) you can use Effects -> Time and Pitch -> Stretch & Pitch
If you still have imperfect results. You will have to do manual Pitch correction. A very good tutorial is here