Infrasound refers to sound waves with frequencies below 20 Hz, which are too low for the human ear to detect. These waves are produced naturally by various sources such as earthquakes, volcanic eruptions, storms, and meteor impacts, as well as by anthropogenic sources like industrial machinery, wind turbines, and nuclear weapons.

This program describes the ways infrasound has been observed and documented throughout history, the effects and the ways it is recorded and made audible, with a detour into the aesthetics of technological mediation of inaudible sound.

Featured Sounds: Infrasound Laboratory University of Hawaii

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