Audio Visualization in Phase Space
David Gerhard · 1999
There are several modern methods to visualize sounds, from the oscilloscope and the spectrometer, to colour organs and strobe lights. Phase space is a relatively new way to visualize sounds. Originally used to better understand the chaos of strange attractors and other non-periodic systems, it can be used to observe the regularity of periodic and pseudo-periodic signals. Besides uncovering higher dimensionality and interesting complexity of sound signals, these phase space images are attractive and compelling to look at. 1 Introduction The analysis of sound has been a topic of interest to researchers since the early 1600s, when Galileo and Mersenne did experiments to relate the pitch of a sound to its frequency (There is a good introduction to sound visualization in [8]). Sound visualization has been used as a method of sound analysis since the late 1700s, when Higgens observed the effect of a sound on a candle flame. Later, Rudolf Koening built an instrument for observing the f...