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

There are lots of videos around.

    • 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·
        5 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·
        8 hours ago

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