Topic: Is it possible to reverse a fade out with Audacity?

[Chad]

I just ripped a show from CDR and would like to undo the fade out that was applied at the end of disc 2 so it flows into the next track seamlessly as possible. See screen cap below. Is there a way to do this? I currently have Audacity installed.

[ilduclo]

you can do this in Soundforge by using the envelope amplify, get the values at the trough and the peaks on either side and envelope it up in the center. Audacity, not real sure

[capnhook]

you can do this in Soundforge by using the envelope amplify, get the values at the trough and the peaks on either side and envelope it up in the center. Audacity, not real sure

Same in Audacity.

[Chad]

Thanks for the replies. I've been trying to figure out, but no luck. What does the trough mean? Is there a tutorial somewhere on how to do what you are saying?

[capnhook]

Play around with the volume envelope tool in Audacity....it will become second nature to you in no time.

[Brian Skalinder]

The Audacity volume envelope works just like the one I mention here:

http://taperssection.com/index.php?topic=99036.msg1319812#msg1319812


After engaging the volume envelope, you should have a horizontal line (yellow, in Audacity?) that represents the baseline volume, i.e. the current state volume.  Add two points on the line for your start / end points.  Then, in between, add points above or below the line to increase or decrease the volume.  The number and placement of points defines the volume envelope -- slope, or curved, or jagged, or what have you.  In your case, it looks like a linear fade out, so you'd have three points:  one at the starting point, one at the end point of the track, and a third above the endpoint defining how much gain to add in a linear increase.  It would look something like this:

[ilduclo]

yeah, mess around with the envelope tool, it should work. what I'd do would be to copy the area you want to fix, try a bunch until you get it right, then use the same settings on the orig file. should save processing time on the screw around attempts as you get it right.

[ScoobieKW]

The envelope drawing above is spot on. Three thoughts.

• Might be easier in Reaper or some program with real-time preview.
• A tiny crossfade might cover any unevenness at the split point.
• is it a passage that's repeated? I've heard/not noticed patches from an earlier measure.

Reaper has a free trial.

[trustthex]

My thoughts on restoring a fade-out is that you will reach a point where there isn't enough signal to restore...

That was a few years ago, and probably I just didn't know what I was doing with EQ in post, but I came to the conclusion that if the curve is down a lot, like 20db, trying to boost that back approaches simple math... 0 x 1000 = 0.

Good luck, hopefully the tape's out there somewhere?