<!DOCTYPE html>
<script>
var r0=new AudioContext();
var r5=r0.createOscillator();
var r6=r0.createPeriodicWave(new Float32Array(1),new Float32Array(1));
r5.frequency.value = 4294967295;
r5.start(0);
r5.setPeriodicWave(r6);
</script>
