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.lu
    link
    fedilink
    English
    arrow-up
    17
    ·
    8 hours ago

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

      • Sylvartas@lemmy.dbzer0.com
        link
        fedilink
        English
        arrow-up
        1
        ·
        34 minutes 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