Hi,
I have to synchronize two tracks for a Muxing (audio/video) and I want to raise the peaks of one of them to better see the differences, this can be done with the ‘compression’ filter but I would not want to ruin the track, there is a way after working the track to cancel the ’ compression 'and make the file cone to the origin?
Thanks
- apply the compression
- listen to the result
- If you are unhappy with the result use Edit > Undo or its shortcut Ctrl + Z
It’s also worth making a backup copy of your project in a good known state that you cna revert to. For this use File > Save Peoject > Backup Project - giving the backup a (slightly) different name.
WC
making a backup copy of your project
Always a good idea. Export a protection WAV copy of your raw reading or performance before you mess with it.
Edit > Undo or its shortcut Ctrl + Z
Yes, but.
Say you increased the sound peaks to see what you’re doing, and then Time Shifted the performance to be spot on. UNDO will remove the time shift.
I might apply Effect > Amplify a known, fixed amount rather than one of the compression tools, do the time correction now that I could see what I’m doing, and then Effect > Amplify again the opposite amount to remove the initial boost. Amplify is a simple sound volume change and is reversible with no damage inside Audacity.
Koz
I can’t use Ctrl + Z because after compressing I have to edit the audio with cut and paste and I can’t delete them
When I need to do something like this, I use Ctrl-D to duplicate the track. I MUTE the original track and work with the copy. This way, I can always refer back or even revert back to the original track.
Let me explain better 
I have to put the two tracks side by side to compare the audio peaks then I have to cut and copy parts of that compressed one and save it, even if I make a copy I don’t solve why I have to save the worked one