Usage: ggwave-to-file [-vN] [-sN] [-pN] [-lN]
    -vN - output volume, N in (0, 100], (default: 50)
    -sN - output sample rate, N in [6000, 96000], (default: 48000)
    -pN - select the transmission protocol id (default: 1)
    -lN - fixed payload length of size N, N in [1, 16]

    Available protocols:
      0 - Normal
      1 - Fast
      2 - Fastest
      3 - [U] Normal
      4 - [U] Fast
      5 - [U] Fastest
      6 - [DT] Normal
      7 - [DT] Fast
      8 - [DT] Fastest

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