Re: Merge and pipe channel assignment madness

---- Original Message ----- 
From: "Jan Stary" <[email protected]>
To: <[email protected]>
Sent: Monday, September 04, 2017 10:21 AM
Subject: Re: [SoX-users] Merge and pipe channel assignment madness


> On Sep 01 23:24:20, [email protected] wrote:
>> Hi guys,
>> Trying to merge multiple mono and poly Wave files while piping (to add 
>> custom padding to each input file.)
>> Whatever I do, on input poly files the output channel order is totally 
>> unpredictable.
>>
>> I’m using something like sox -M “| sox 3ch.wav -p pad 1” “|sox 
>> 5ch.wav” -b 24 output.wav
>> I would expect to get the same order of output as in the order of the 
>> input / pipe, but that does not happen.
>
> What happens if you pad the files first
> and then do the merge without any extra piping?

Hi Jan,
That would create a lot of temp files, and take time.
However, I think I have it resolved by putting all inputs as mono into a 
(very long) pipe:
eg
sox - M “| sox 3ch.wav -p pad 1 remix 1" “| sox 3ch.wav -p pad 1 remix 2" “| 
sox 3ch.wav -p pad 1 remix 3" “| sox 5ch.wav -p pad 1 remix 1 ...... etc...

That seems to do the trick!

thx,
Bouke

> Jan
> 

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