Chapter 2: The Crucial Experiment

Section 1: How Do Simple Programs Behave?

Audio representation [of cellular automata]

A step in the evolution of a cellular automaton can be represented as a sound by treating each cell like a key on a piano, with the key taken to be pressed if the cell is black. This yields a chord such as

Play[Evaluate[Apply[Plus, Flatten[Map[Sin[1000 # t] &, N[2^(1/12)]^Position[list, 1]]]]], {t, 0, 0.2}]

A sequence of such chords can sometimes provide a useful representation of cellular automaton evolution. (See also page 1080.)

From Stephen Wolfram: A New Kind of Science [citation]