The Long-Range Acoustic Device, or LRAD, was developed for the military for long-range communication at sea. But this ear-splitting device has also been fired on protesters across America, resulting in lawsuits and permanent hearing loss. In this episode, we explore the history, science and effects of the so-called “sound cannon.” Featuring tech journalist Lynne Peskoe-Yang and activist Michele Lindor.

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Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/thedeterrenttone

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The Deterrent Tone 26:08 Share

Twenty Thousand Hertz

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The Deterrent Tone