Sound file handling

  analyze - frequency plot of a sound signal
  auread - load .au sound file
  auwrite - writes .au sound file
  beep - Produce a beep sound
  lin2mu - linear signal to mu-law encoding
  loadwave - load a sound wav file into scilab
  mapsound - Plots a sound map
  mcisendstring - sends a command string to an MCI device (Windows only).
  mu2lin - mu-law encoding to linear signal
  playsnd - sound player facility
  savewave - save data into a sound wav file.
  sound - sound player facility
  soundsec - generates n sampled seconds of time parameter
  wavread - load .wav sound file
  wavwrite - writes .wav sound file