Power Spectrum of Cellular Automaton Dynamics

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The cellular automaton (CA) dynamics calculated from the total of each step can be seen as a kind of signal and analyzed by its power spectrum. The power spectrum found by the discrete Fourier transform of CA dynamics shows the amount of energy over time; it illustrates periodicities.
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Contributed by: Daniel de Souza Carvalho (March 2011)
Open content licensed under CC BY-NC-SA
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"Power Spectrum of Cellular Automaton Dynamics"
http://demonstrations.wolfram.com/PowerSpectrumOfCellularAutomatonDynamics/
Wolfram Demonstrations Project
Published: March 7 2011