[SoX-users] Strange slice behaviour? (14.3.0-1-1)

[Jonas N. <jon...@gm...>]

Hi!

Thank you Chris and Pascal for pointing out the need of a newer version than
14.0.1 to use splice.
I've installed 14.3.0-1.1 on my Lenny.

However, I can't get the result that I'm looking for.

I have two mp3 files: FIRST.mp3 and SECOND.mp3
I want to crossfade them so that the end of FIRST.mp3 blends into the
beginning of SECOND.mp3.

For this, I'm trying the following:

sox FIRST.mp3 SECOND.mp3 RESULT.wav splice 3,1,1

This is supposed to create an crossfade 3 secs into first.mp3, with 2
seconds overlap (one in each "direction"), isn't it?
(I might be wrong about the excess and leeway values here, but that's not
the problem right now...)

The strange thing is that in RESULT.wav, I get a crossfade from FIRST.mp3 to
FIRST.mp3 (at the expected spot, but to the wrong file) followed by
SECOND.mp3 (seems to simply be concatenated - no crossfade - to the end of
the faded firsts).

Am I missing something fundamental here?

- Jonas