The random number generator is perhaps one of the most useful and versatile tools in your synthesis tool kit. It can be used for everything from sound design to algorithmic composition. Beat Mangler X makes use of random by generating different splice and stutter patterns each time it is rendered. In Markov Experiment II, note nodes are chosen based on weighted odds, producing variations of a melody.

The listening example is fairly straight forward. The frequency of a triangle wave oscillator is modulated by a random unit generator that updates its value 4 times a second.

Download random.csd here.

“Any one who considers arithmetical methods of producing random digits is, of course, in a state of sin”John von Neumann (source)

Note. Computers don’t really produce random numbers, they produce pseudorandom numbers.

Synthesis Fall 2010

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