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Subject:Crossfade
Posted by: tillitea
Date:6/8/2003 5:47:25 PM

What is a general method for crossfading? I have one audio file loaded. I want to crossfade a segment in the middle. Thanks. I can't really understand the explanation the help file gives.

tillitea

Subject:RE: Crossfade
Reply by: pbeshuk
Date:6/9/2003 7:39:43 PM

I posted the same question a few months ago and go no response, so here's the only way I know:

I work on large wave files with continuous live sound so I often want to delete portions of pure crowd noise with no discernable seams, but I don't care which exact section gets deleted; I just want to remove about n seconds worth of crowd noise.

Assume your wave file has these Markers in it:
Start, A, B, C, End

Say you want to roughly "delete" a section of length B:C, but it's not critical which exact section you delete. Try this -
1. Cut C:End (often a huge wave file section)
2. Select B:C (often a small section). It may be necessary that B:C is shorter than C:End.
3. choose Edit-PasteSpecial-CrossFade
4. Set the sliders so the Source fades in and the Destination fades out.
Source = clipboard = C:end, Destination = selected area = B:C
5. Check the button so the crossfade starts at "Start of Selection"
6. Click OK

The length of B:C deteremines how much of the wave file gets "deleted" (ie how much of C:End overlaps B:C, lengthwise). Basically, you are pasting C:End on top of B:C and so the length of B:C detemines how much of the wave file got deleted, timewise. Once the Cfade has reached point C, the rest of the C:End portion gets pasted without alteration to the right of C.

It takes a while if the C:End cut is a large amount of data. Sometimes I cut the file in half to speed up the process then reassemble it before saving.

So far I've haven't found a better way, but maybe a followup post will improve on this mehod. I'd like to be able to do this by "cutting" a much smaller section.

Subject:RE: Crossfade
Reply by: Iacobus
Date:6/10/2003 10:28:03 AM

Open 2 files. Make a selection in one, then click and drag it over to the other.

You'll notice the mouse cursor will have "P" attached to it (which stands for "paste). While still holding your primary (left) mouse button, right-click once. The "P" should turn into a "C" (crossfade). Once you place the selection, let go of your primary mouse button. The crossfade dialog should appear. Adjust as necessary and click OK.

HTH,
Iacobus

Subject:RE: Crossfade
Reply by: tillitea
Date:6/11/2003 12:07:18 AM

Thanks. That way makes it simple.

tillitea

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