<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>

var ac = new AudioContext(1, 1354, 44100);
var shaper = ac.createWaveShaper();
var biquad = ac.createBiquadFilter();
shaper.connect(biquad.frequency);
biquad.getFrequencyResponse(new Float32Array(55785),
                            new Float32Array(62876),
                            new Float32Array(45111));

</script>
</head>
</html>
