Fractal Music works much like the random music discussed on the previous page, with one significant difference. Like random music, a variety of mappings between numerical values and pitches may be used with varying results, but the numerical values are generated using fractals, rather than random numbers. A number of different fractals can be used for the purpose, including Iterated Function Systems (IFS), strange attractors (such as the Lorenz attractor), and the Mandelbrot set and Julia sets.

Using a system like the Henon attractor, we can generate pitches by beginning with a particular value of our choosing and then using its iterates to generate further values. A similar method can be used with Iterated Function Systems.

The applet below uses the equations of the Henon Attractor, ** x(n+1) = 1 + y(n) - a*x(n)^2** and

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