SoX from System Application

Asterisk Asterisk General
1

Hello,

Asterisk 13.18.2

I’m trying to merge the two files (in and out) created with the MONITOR application:

same => n,Monitor(wav,${UNIQUEID},b)

in a stereo file with SoX. I’m using this command:

exten => h,1,System(sox -M -v 0.95 /var/spool/asterisk/monitor/${UNIQUEID}-in.wav -v 0.95 /var/spool/asterisk/monitor/${UNIQUEID}-out.wav /tmp/${UNIQUEID}-stereo.wav)

without success; the result is always a 144 bytes (or 44) output file.

If I use the same command from linux prompt, working fine…

Maybe Asterisk don’t release the two files in the h extension… and sox can’t use them…

Any hint?

Thank you

Regards

2

Can you use MixMonitor?

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Application_MixMonitor

3

Hello,

I can’t use MixMonitor because I’d like have a Stereo file with separate
telephone channels, one left and one right.

With Mixmonitor I have a audio file with mix telephone audio channels.

Regards

4

Then instead of trying to run the mix command in your h extension I’d recommend setting a MONITOR_EXEC variable.

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Application_Monitor

5

MONITOR_EXEC is not the solution because I need the stereo file with
each channel separated:

example: channel in on the left ear and channel out on the right ear

Thank you.

Regards

6

I think there is some kind of restriction at the asterisk level because
if I use sox from command line or bash script no problem.

Any help is appreciated.

Regards

7

MONITOR_EXEC allows you to specify what command to run after the file is closed, you can run your sox command via monitor exec.

1 Like
8

Working with:

MONITOR_EXEC=/usr/bin/sox -M

Thank you very much!!!

Regards

1 Like