Belgrade authorities have used sound weapons on the crowd of protesters. The video description has some educational links.

There are lots of videos around.

  • Mubelotix
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    273 days ago

    Fortunately once people are aware of such tricks, they won’t be effective anymore

      • @Sylvartas@lemmy.dbzer0.com
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        173 days ago

        Sound is moving air and carries energy. With the right frequency and intensity it could definitely physically fuck you up even if your ears are covered.

        Wikipedia:

        Studies have found that exposure to high intensity ultrasound at frequencies from 700 kHz to 3.6 MHz can cause lung and intestinal damage in mice

        • @barsoap@lemm.ee
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          83 days ago

          LRADs are loudspeakers. Loudspeakers which can output in the order of 160db at 1m. Anything can be a weapon when you make it powerful enough.

          • @MyScreenName@lemmy.zip
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            53 days ago

            Technically, yes. A bullet is just a fast moving object.

            I was refering to sheer power of the thing. Guy asked if earplugs would help. LARD gets a tree swinging. It’s not “just a speaker” at that point.

        • Jonas
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          43 days ago

          @europe might have to read more about this but I thought sonic weapons were also able to destroy your eardrums right