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

LRAD is the global leader and de facto standard of Acoustic Hailing Devices (AHDs). Featuring Genasys’ Advanced Driver and Waveguide Technology, LRAD systems broadcast audible voice …

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 sound.

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?

Dec 10, 2024 · Managing large crowds and communicating effectively over long distances is a challenge in law enforcement. Tools like the Long Range Acoustic Device (LRAD) have become valuable …

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 including tear gas …

Mar 21, 2025 · The directional acoustic beam formed by an LRAD (typically 15-30 degrees) employs the same wave physics principles that sound designers use for line array systems in concert venues, but …

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 some protesters …

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] .

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 enforcement agencies …