Definition
Web Audio API defines BiquadFilterNode
[Exposed=Window]
interface BiquadFilterNode : AudioNode {
constructor (BaseAudioContext context, optional BiquadFilterOptions options = {});
attribute BiquadFilterType type;
readonly attribute AudioParam frequency;
readonly attribute AudioParam detune;
readonly attribute AudioParam Q;
readonly attribute AudioParam gain;
undefined getFrequencyResponse (Float32Array frequencyHz,
Float32Array magResponse,
Float32Array phaseResponse);
};