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Test Info:
<!DOCTYPE html>
<html class="reftest-wait">
<script>
const ac = new OfflineAudioContext({length: 136, sampleRate: 48000});
const filterNode = new BiquadFilterNode(ac);
filterNode.frequency.setValueCurveAtTime([0.2, 0.3], 0, 1);
filterNode.frequency.linearRampToValueAtTime(0.8, 1);
ac.startRendering().then(() => {
filterNode.frequency.value;
document.documentElement.removeAttribute("class");
});
</script>