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@jlai.luEnglish
    19·
    14 hours ago

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

      • Sylvartas@lemmy.dbzer0.comEnglish
        8·
        6 hours 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.eeEnglish
          5·
          6 hours 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.

        • Jonas@mastodon.nl
          3·
          9 hours ago

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