Команда SOX (аудио)
Wav to Alaw
sox fax.wav -t raw -r 8000 -c 1 -b -A fax.alaw
mp3 to wave
lame –decode file.mp3 - | sox -v 0.5 -t wav - -t wav -2 -r 8000 -c 1 file.wav
system:wave_to_alaw
sox fax.wav -t raw -r 8000 -c 1 -b -A fax.alaw
lame –decode file.mp3 - | sox -v 0.5 -t wav - -t wav -2 -r 8000 -c 1 file.wav