A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance.

Sep 30, 2025 · LRAD is the global leader and de facto standard of Acoustic Hailing Devices (AHDs). Featuring Genasys’ Advanced Driver and Waveguide Technology, LRAD systems …

Jun 17, 2020 · During the 2020 protests, police have used an LRAD sonic weapon to disperse protesters. What is it, how does it work, and how can you protect your ears?

Mar 17, 2025 · Review the basics of sound and discover exactly how the LRAD produces its "beam of sound." We'll also explore LRAD's hailing and warning abilities and other uses for …

In uncertain or escalated public safety situations, LRAD fills the critical gap between the limited range and poor intelligibility of bullhorns and vehicle P.A. systems, and kinetic measures …

Feb 20, 2022 · At vaccine mandate protests in Canberra last week, police used powerful loud-hailing devices called Long-Range Acoustic Devices (LRADs) to address protesters. While …

Nov 30, 2019 · [1] An LRAD, short for long-range acoustic device, was used against American protesters for the first time at the G20 Summit Pittsburgh protests in September 2009. [1] .

Jun 9, 2020 · What is the LRAD? The Long Range Acoustic Device, or LRAD, is a speaker system and sound energy weapon developed in the early 2000s for use by the U.S. military.

Mar 21, 2025 · LRAD systems rely on advanced transducer arrays configured to create highly focused directional sound projection. This technology employs acoustic lensing principles, …

LRAD is law enforcement’s communication systems of choice throughout the world, including in more than 500 U.S. cities. LRAD systems are fundamentally changing the way law …