[solved] Convert multichannel raw file to wav

Rodolfo Medina <[email protected]> writes:

> I'm converting to wav format a raw file that comes from this:
>
>  $ pacat --record -d
> alsa_input.usb-BEHRINGER_UMC404HD_192k-00.analog-surround-40 > dump.raw
>
> because it's the result of a three-microphone live recording using my
> four-channel Behringer audio interface.  I expect the result to be a
> three-channel file: what will the right sox command be?  The following:
>
>  $ sox -t raw -r 44100 -e signed-integer -L -b 16 -c 2 dump.raw output.wav
>
> produces a two-channel file: please help.  Instead, if I record with:
>
>  $ sox -t alsa hw:2,0 output.wav
>
> I get a four-channel file.  But I'd prefer using pacat.  Please help.  Thanks.


Sorry, it was a pacat problem, not sox's: the proper syntax for the pacat
command is:

 $ pacat --record -d alsa_input.usb-BEHRINGER_UMC404HD_192k-00.analog-surround-40 --channels=4 --channel-map=aux0,aux1,aux2,aux3 > dump2.raw

and then sox:

 $ sox -t raw -r 44100 -e signed-integer -L -b 16 -c 4 dump2.raw output2.wav

This way it seems to work.  Do you tink it's correct?

Thanks,

Rodolfo