Post #1452972

@PepperTheVixen I don't recall the exact incantations for this but I did it with sox before. Had an HDMI soundbar that none of the silence addons/techniques worked with. Wrote a script/systemd unit to generate just enough high-frequency noise just quietly enough that the soundbar stayed active and I couldn't hear the sound. Worked pretty well. I generated a silence.wav file and swapped out one of the app-provided ones, and just made it generate a loop live for the user systemd unit.