Asterisk audio file conversion

Using Sox

Converts 8kHz linear PCM 16 bit signed single channel format into a wav file

/usr/bin/sox -t raw -r 8000 -e signed-integer -b 16 -c 1 recording.raw recording.wav

Using Asterisk

Converts 8kHz linear PCM 16 bit signed single channel format into a wav file. It must have the right file extension (in this case .sln) for Asterisk to recognize the input format.

file convert recording.sln recording.wav

Only file formats that asterisk knows how to transcode can be converted with Asterisk. Sox supports more formats.