What You Should Know Before Leaking a Zoom Meeting
Some articles found by googling [1] [2] from two years ago describe this capability as "ultrasonic watermark" so it is not new. I think this is coming to light as Zoom has become popular with the pandemic. For a journalist wanting to sanitize audio I would think they need to remove anything higher than 15kHz.<p>[1] <a href="https://www.nojitter.com/video-collaboration-av/zoom-takes-voice-ga" rel="nofollow">https://www.nojitter.com/video-collaboration-av/zoom-takes-v...</a><p>[2] <a href="https://venturebeat.com/2019/01/22/zoom-is-bringing-ultrasonic-signatures-to-business-calls-to-deter-leaks/" rel="nofollow">https://venturebeat.com/2019/01/22/zoom-is-bringing-ultrason...</a>