message: SpectrumAndCepstrum: default to assuming SerialPlotter
diff: //
  // This example code is in the public domain (MIT License)
  -#define OUTPUT_FOR_SERIAL_PLOTTER false //set to true and then open the Arduino SerialPlotter rather than the Serial Monitor
  +#define OUTPUT_FOR_SERIAL_PLOTTER true //set to true and then open the Arduino SerialPlotter rather than the Serial Monitor
  #include <Tympan_Library.h>
  #include "AudioAnalysisCepstrum_FD_F32.h" //the local file holding your custom function
  