1864450.html (428B)
1 <!DOCTYPE html> 2 <html class="reftest-wait"> 3 <script> 4 const ac = new OfflineAudioContext({length: 136, sampleRate: 48000}); 5 const filterNode = new BiquadFilterNode(ac); 6 filterNode.frequency.setValueCurveAtTime([0.2, 0.3], 0, 1); 7 filterNode.frequency.linearRampToValueAtTime(0.8, 1); 8 ac.startRendering().then(() => { 9 filterNode.frequency.value; 10 document.documentElement.removeAttribute("class"); 11 }); 12 </script>