3D Spectrum Analyser

More than a year ago, a friend of mine asked me to write the software for his 3D Spectrum Analyser (3DSA): a device that takes as input an audio signal, and outputs its visualisation on a 3D matrix of leds. If the above description doesn't quite ring a bell, simply watch the end result in action: For the hardware fans amongst you, my friend documented the construction process meticulously: 3D Spectrum Analy ...

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