Audio Visualizer

This project aims to be an audio visualization tool, mostly for interest. The visualization will play on the fact that both sound and colour are frequency-based. The idea is that every pitch can be mapped to a colour by taking its frequency and doubling it until it is in the very high range that corresponds to the visible spectrum of light.

The visualizer’s form will be circular: the lowest frequencies will be a tiny circle in the centre of the visualization; higher frequencies will be correspondingly larger circles. As sound may occur in many octaves, whereas the range of the visible spectrum is not quite a full octave, pitches higher than the very lowest octave will be mapped to ever-larger circles while the colours repeat. For white noise across the entire range of frequencies audible to humans, the visualizer should therefore appear as many concentric rainbows.

Because the visible spectrum of light is not quite a full octave, transformed sound frequencies will have to be compressed slightly for a one-to-one mapping of an octave of sound to an octave of light. See the table below for more details.