Jellymatter

Whilst hyperflunking across the interdimensional quantum vibration matrix, your spaceship detects three jumbled up signals. They sound like random noise, but you suspect they are in fact secret messages from Glycerol Soap Bomb, the ruler and Maximal Liapunov Exponent of the planet Cholesky Decomposition. The messages can be downloaded from the following locations:

http://www.sussex.ac.uk/Users/jt241/signal1.wav

http://www.sussex.ac.uk/Users/jt241/signal2.wav

http://www.sussex.ac.uk/Users/jt241/signal3.wav

The signals have actually been coded using a similar technique to the chaotic message hiding method we have already discussed. However, Glycerol Soap Bomb has sneakily mucked about with the algorithm a little bit, so you will probably find the three messages progressively harder to reconstruct.

Nonetheless, feel free to make use of this Java code for the original Jellymatter chaotic encryption system as a starting point. The ChaoticTransmitter class takes a wav file with a message in and hides it in a chaotic signal in a new wav file. ChaoticReceiver reconstructs the original message from the chaotic signal.

To start you off, try decoding this message which was created using the above code, so you should be able to use the provided ChaoticReceiver as-is to reconstruct it easily:

Use any method you want to find the solutions though. I believe it should be possible to find the messages without using a chaotic receiver (though I haven’t done this myself yet), so feel free to do that if you want. Bonus marks though if you are able to determine exactly how the messages were created, or for solutions that produce clearer sounding reconstructions.

The prize for finding the answers is a feeling of smug superiority.

Feel free to stick answers or thoughts in the comments. I will post a follow up with the original messages and correct encryption methods after a sensible time delay…

UPDATE: 5.30pm: I put the wrong file up for signal 3, I’ve left it anyway, but the one I intended was this: http://www.sussex.ac.uk/Users/jt241/signal4.wav

Posted on January 6, 2012 at 12:00 pm in Challenge   |  RSS feed |   Respond   |   Trackback URL