I find a single sense can sometimes be intensified by ignoring others; close your eyes when listening to sounds, for instance. This is trying to reveal something you could describe as being close to the opposite of that.
Sound frequencies are mapped linearly over time from low (bottom) to high (top), while brightness is determined by amplitude. Sweeping tones and rhythmic patterns create intricate structures. The circular form is in memorial of dead formats; the CD,
The sounds you're hearing were composed by Ryan York. Lee Martin, a developer at Soundcloud, built a generative incarnation with canvas and the SoundCloud API, located at spectrogr.am. Andrew Ohlman compiled a Quartz sketch which does similar things.
