WAV TO PCM

FFmpeg has binaries for Windows. It is also available for Linux and other operating systems. That makes it more ubiquitous than GStreamer. Here’s the command line for converting a WAV file to raw PCM

ffmpeg -i file.wav -f s16be -ar 8000 -acodec pcm_s16be file.raw

s16be indicates that the output format is signed 16-bit big-endian. The audio rate is changed to 8000 Hz.

You can import and play raw PCM using Audacity.

출처 : http://delog.wordpress.com/2011/11/04/convert-wav-to-pcm-using-ffmpeg/