Hi, there are few times when to get by ear all notes in a fast solo I slow down / time stretch pieces , and mostly works, but in extreme fast cases for percussive sounds like piano that means that the attack time is smeared so much (could be 0.5 secs) that is difficult to get the right timing.

So IF I export the slowed audio, what can I do to restore at least a bit of the sharp attack?
Transient shapers?
BTW if also decay could be shortened a bit it won't be that bad.

If possible I would prefer standalone sw, but in case it's not possible also daws / vsts.
Windows only.