Re: [SoX-users] Taking the left and right channels of two wav files and joining them into one stereo file

[Chris A. <ro...@gm...>]

On Mon, Jul 6, 2015 at 5:04 PM, Erich Eckner <er...@ec...> wrote:
>> Or alternatively, fold the two input files down to mono, and then
>> merge into one output file. But I'm curious: Can this be done with a
>> single sox invocation? There are times when I'd like to do this too.
>>
>> ChrisA
>
> yes and afaik no:
>
> yes, if you count the number of commands you have to type into your
> command line:
> sox -M "|sox in_left.wav -p remix 1" "|sox in_right.wav -p remix 2"
> out_stereo.mp3
>
> and no, if you count the number of sox-processes actually running (the
> above command will have 3, I can't think of one with less processes,
> which _first_ mixes down and then merges together).

Doing it with pipes does mean that it doesn't require intermediate
storage, which is good; but what I meant by "a single invocation" was
a single process, so I guess that's not possible. No matter, the pipe
technique will serve. Thanks.

ChrisA