Re: splice not working correctly

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It's very visible with silence as the second track.

sox -n -r 96000 -c 2 silence.wav trim 0 7
sox in.wav in_trim.wav trim 0 6
sox in_trim.wav silence.wav out.wav splice -q 5,1

There is this echo / duplication starting already at 3-4 seconds.


On Mon, 23 Dec 2019 at 23:43, Zsolt Ero <zsolt.ero@xxxxxxxxx> wrote:
>
> Hello,
>
> I'd like to use split to mix two slightly different tracks for AB
> testing purposes. I'd like to have 0..5 second from track A and 5..10
> seconds from track B, etc. 10..15 track A, 15..20 track B.
>
> I'd be very important to make sure that it doesn't change the signal
> in any way, as in if I run it with identical tracks, I'd get back the
> original track.
>
> My problem is that it's not what is happening. For validation I'm
> using a big excess value = 1 sec + -q for equal cross fade.
>
> So far here are my basic CLI arguments:
> sox A.wav tmp/A_0.wav trim 0 6
> sox A.wav tmp/A_5.wav trim 4 7
> sox tmp/A_0.wav tmp/A_5.wav out.wav splice -q 5,1
>
> Can you correct me in how to use splice correctly? The way I'm using
> it I get a bit of an echo / duplication at the end of the first file,
> just before the mixing point.
>
> Zsolt


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