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https://github.com/tr1pzz/Realtime_PyAudio_FFT
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http://www.onlamp.com/pub/a/python/2001/01/31/numerically.html
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http://www.rpi.edu/~kouttd/03/Rage_against_the_arduino.html
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http://forum.insanelymac.com/lofiversion/index.php/t44972.html
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http://instruct1.cit.cornell.edu/cour...07/cd247_maw72/cd247_maw72/index.html