How do I undo `Fade out` on a saved project

Help for Audacity on Windows.
Forum rules
ImageThis forum is for Audacity on Windows.
Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".


Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
Post Reply
blarkin
Posts: 2
Joined: Sat Aug 13, 2016 1:02 am
Operating System: Windows 10

How do I undo `Fade out` on a saved project

Post by blarkin » Sat Aug 13, 2016 1:39 am

Hi, I am currently using Version 1.3 on Windowa 10 but am not having any issues.

My question is how to undo `Fade Out` on a project.
I have recorded 5 tracks and thought the fade out would only apply to the end of the last track - it is fading out on all the tracks - is it possible to undo as I had already saved the change?
Cheers,
Benny

kozikowski
Forum Staff
Posts: 69374
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: How do I undo `Fade out` on a saved project

Post by kozikowski » Sat Aug 13, 2016 2:29 am

If you haven't exited Audacity yet, it's Edit > UNDO. If you have, it's too late.

Even if you saved an Audacity Project, you're stuck. Projects save a lot of things, but UNDO isn't one of them.

I can't picture in my imagination what you did. I guess if you accidentally had all of your tracks top to bottom selected and selected the fade, then yes, that would apply to all of them. But if you selected only one (click just above MUTE), the fade should have happened to only that one.

Koz

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: How do I undo `Fade out` on a saved project

Post by Gale Andrews » Sat Aug 13, 2016 12:26 pm

blarkin wrote:Hi, I am currently using Version 1.3 on Windowa 10 but am not having any issues.
We don't support 1.3 any longer. You need to upgrade to be eligible for technical support ;)

You can get 2.1.2 from http://www.audacityteam.org/download/windows. If that shows you "Internal PortAudio error" then it's just one extra upgrade of Audacity to fix that.


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

Robert J. H.
Posts: 3633
Joined: Thu May 31, 2012 8:33 am
Operating System: Windows 10

Re: How do I undo `Fade out` on a saved project

Post by Robert J. H. » Sat Aug 13, 2016 3:07 pm

blarkin wrote:Hi, I am currently using Version 1.3 on Windowa 10 but am not having any issues.

My question is how to undo `Fade Out` on a project.
I have recorded 5 tracks and thought the fade out would only apply to the end of the last track - it is fading out on all the tracks - is it possible to undo as I had already saved the change?
Cheers,
Benny
It depends on how much you know about the applied fade-out.
- start and end time
- was it used once (linear) or more times (slightly curved)

The idea is to multiply fade out by the reciprocal of the original fade out.

For instance a very simple fade out could have been:
audio * [1 0.5 0]
the inverse would be to multiply the result with [1 2 infinity]

Of course, sample values are finite and the last value has to be clipped at a high value.

A newer version of Audacity has "Adjustable Fade" where you could enter 100 % as initial or left amplification and the maximum 1000 % as the amplification for the right side.

Due to the limit of the latter, you must apply the effect multiple times (ctrl-r).
I'm talking about 50 times or so...

Robert

Post Reply