WAV 를 RAW 로 변환 - sox

sox -V3 -r 44100 -e signed -L -b 16 -c 2 split-track01.wav split-track01.raw

-V[level]
        0: No messages
        1: Only error messages
        2: Warning  messages (default)
        3: SoX's processing phases
        4: Debugging Messages