Reminds me of how Zoom Rooms play ultrasound to automagically pair your computer to the room [1]. For a while I thought I was going crazy hearing this incredib

Reminds me of how Zoom Rooms play ultrasound to automagically pair your computer to the room [1]. For a while I thought I was going crazy hearing this incredibly high-pitched, faint chirping in meeting rooms when no one else could (I have weirdly good high-frequency hearing). There's probably a solid limit to how far into inaudible ultrasound Zoom can push this sound, though, considering that computer microphones are designed to pick up things that people can hear. [1] https://support.zoom.us/hc/en-us/articles/214629303-Direct-Share-with-Zoom-Rooms https://support.zoom.us/hc/en-us/articles/214629303-Direct-S...