Subject: [ecasound] Fade-in/Fade-out
From: Michael Carmack (karmak_AT_karmak.org)
Date: Sun Apr 21 2002 - 20:06:03 EEST
There's probably a simple answer to this question, but I haven't quite
got the hang of ecasound yet and I'm under a bit of a deadline to put
a simple fade-in/fade-out on some sound clips ripped from a CD. What
I've been doing to put a 1-second fade-in/fade-out is the following:
1. Rip a snippet of a track from a CD -- call it clip.wav. For this
example, we'll assume it's a 30-second clip:
2. Run the following commands
ecasound clip.wav -ea -kl:1,0,100,1 -t:29 -o clip1.wav
ecasound clip.wav -ea -kl:1,100,0,1 -y:29 -o clip2.wav
ecasound -i clip2.wav -o clip1.wav -y:29
mv clip1.wav clip.wav
For the most part this seems to work, but the issues are:
(1) It seems a bit clumsy--is there a more direct way to do this?
(2) Occasionally I get a 'hiccup' where the two files are patched
together (the third command above).
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