The Cat Map is a matrix manipulation technique applied to the samples of a sound file. The point of interest in the manipulation is that after a certain number of iterations of the manipulation the matrix returns to its original order.

---deeper explanation of the Cat Map---

some examples of what this process does to a sound (mp3)

• sine wave
n = 16 : 12 iterations
n = 930 : 60 iterations


• voice
n = 209 : 45 iterations


• Webern Op.27 Nr.2
using a transformation with twelve iterations I follow Webern's tone rows
the sound source was a sample of a piano playing the first two pitches of the piece (G#3 and Bb6)

listen

*** C source for Max/MSP external ***