I captured some audio in asterisk using ... / 2011-06-13

I captured some audio in asterisk using the MixMonitor command, like:

exten => _00.,1,Set(filename=${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)})
exten => _00.,n,NoOp(${CHANNEL} tried to reach ${EXTEN} logging to wrongnum-${filename})
exten => _00.,n,MixMonitor(wrongnum-${filename})
exten => _00.,n,Goto(wrongnumber,s,1)

But I wanted to listen to the audio. Which turned out to be a bit of searching. In the end I found the right sox call:

$ play -e signed -r 8000 -b 16 -c 1 keep-20110604-184522.raw

keep-20110604-184522.raw:

 File Size: 647k      Bit Rate: 128k
  Encoding: Signed PCM    
  Channels: 1 @ 16-bit   
Samplerate: 8000Hz       
Replaygain: off         
  Duration: 00:00:40.42  

In:58.3% 00:00:23.55 [00:00:16.87] Out:188k  [!=====|=====!] Hd:0.0 Clip:0    

Converting to a .wav to process in audacity is easy too:

$ sox -e signed -r 8000 -b 16 -c 1 keep-20110604-184522.raw wrongnum-20110604-184522.wav