Celemony's clever restoration tool invisibly fixes the speed variations that can plague material recorded on tape or vinyl.
Celemony supply four example files containing audio with speed-related artifacts. To give you an idea of what their Capstan wow and flutter-correction system can achieve, I've uploaded 'before' and 'after' versions of each one, with a screen capture showing the speed variations as detected in Capstan.
sos-celemony-capstan-aug12.zip | 24 MB
01_wow_before
01_wow_after
02_flutter_before
02_flutter_after
03_speed_glitch_before
03_speed_glitch_after
04_really_bad_before
04_really_bad_after