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Abstract visual glitch art with P'', a subset of the programming language better known as Brainfuck. Programs are generated at random, and run while the tape (memory) is visualized and used to phase modulate a single sine wave.
P'' has only 6 commands, equivalent to: ptr++, ptr--, *ptr++, *ptr--, [ and ], which corresponds to while(*ptr){}. This makes it fairly easy to generate well-formed code at random.
en.wikipedia.org/wiki/P%27%27
en.wikipedia.org/wiki/Brainfuck
en.wikipedia.org/wiki/Phase_modulation
Watch with the audio on OpenProcessing: openprocessing.org/visuals/?visualID=1138
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