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and to test it here (it might be very loud!):

CTRL+SHIFT+I and in the console

    let o, a=new AudioContext();
    document.addEventListener("mousedown",function(){
      if (o) {o.stop(); o = undefined}
      else{ o=a.createOscillator(); o.type="sine"; o.frequency.value=100;
    o.connect(a.destination);o.start()}
    })
If you click anywhere it will start/stop.


It sounds like a pitch that you might hear from an airplane propeller, which leads to the question why airsickness exists if the antidote is ambiently present?




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