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Mystery Signal of the Month   Feb 13 2001
We've got signal, but what the heck is it?
That's your mission.  Analyze this bébé.
 

mystery spectrogram                                                                                                                                                          

download the audio file 4.wav.gz

hints :

  • Setup baudline to be a Netscape helper application as described in the FAQ.
  • Turn on the 60 Hz notch filter in the play deck.
  • Try playing the mystery signal at different speeds, slow it down or drop it an octave.
  • Loop on the transitional points, play it again and again until you start to hear things.
  • Use baudline's harmonic helper bars and delta measurement bars to determine the harmonic relationships.
  • What is the folding frequency?  What direction are the ramps going?   What does it mean?



What is it?

Click here for the answer.

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