• evo@sh.itjust.works
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    1 year ago

    Uh huh… The Oxford definition literally says that’s untue.

    of or involving sound waves with a frequency above the upper limit of human hearing

      • scrion@lemmy.world
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        1 year ago

        People often believe they are hearing ultrasound, but instead are hearing clicking noise or sub-frequencies emitted from the capsule that are not actually part of the ultrasound.

    • melroy@kbin.melroy.org
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      1 year ago

      sorry I can still here it… I sometimes needs to go to the hospital for a check-up on my heart, and I can hear the ultrasound if the device is going over my head.