I have created a new application in gtkIOStream. It is a command line application which splits captured channels to individual audio files.

The code is here :

https://github.com/flatmax/gtkiostream/blob/master/applications/ALSACaptureSplitter.C

You can use it like so :

ALSACaptureSplitter -c 8 -r 48000 -t 5.1 /tmp/test wav

This command will split 8 channels to individual audio files in /tmp/test*.wav. It will record at a rate of 48 kHz and record for 5.1 seconds. To see all options, run ALSACaptureSplitter -h

You will need to do a full compile of gtkiostream to get the application to work.

Do you know how to copmile gtkiostream ?

Matt

p.s. this doesn't do Octo channel swapping fixes ... I can add that later once you get this running.

Hey Coby,

Can you split them off line or do you need to record them to file in real time ?

Matt

On 26/3/20 3:08 am, Coby Levy via People wrote:

hi
i want to record a single channel to a single file, using sox.

the purpose of the recording is sound detection,

so if someone is speaking - I would like to record it to a file, without the long pauses.

nowadays im using 6 usb<>audio devices with the command:

sox -t alsa hw:0,0 file1.wav silence 1 0.2 5% 1 5.0 5% #silence command only passes detected audio
sox -t alsa hw:1,0 file2.wav silence 1 0.2 5% 1 5.0 5%  
sox -t alsa hw:2,0 file3.wav silence 1 0.2 5% 1 5.0 5% 
etc...

but i couldn't find anyway achieving the same using the Octo.

could someone please point me in the right direction?

tnx,
Coby.

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