<!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>