High Prime Sines Fluttering (ohrenExcerpt) by Tina Pearson

Excerpt from audio tests for the installation "This Is For You ohrenhoch Berlin". The audio is designed for stereo or multiple speakers playing a set of sine tones blended to create shifting beating frequencies - the shimmering effect that occurs when two or more tones of close frequency are sounded together. The tones in this sample are tuned to frequencies near or above the typical upper threshold of human perception . Not typically perceived singularly, these frequencies will produce lower beating frequencies that fall within human audio perception range when combined.