type property of the
BiquadFilterNode interface is a string (enum) value defining the kind of filtering algorithm the node is implementing.
var audioCtx = new AudioContext(); var biquadFilter = audioCtx.createBiquadFilter(); biquadfilter.type = 'lowpass';
A string (enum) representing a BiquadFilterType.
type values and their meaning
||Standard second-order resonant lowpass filter with 12dB/octave rolloff. Frequencies below the cutoff pass through; frequencies above it are attenuated.||The cutoff frequency.||Indicates how peaked the frequency is around the cutoff. The greater the value is, the greater is the peak.||Not used|
||Standard second-order resonant highpass filter with 12dB/octave rolloff. Frequencies below the cutoff are attenuated; frequencies above it pass through.||The cutoff frequency.||Indicates how peaked the frequency is around the cutoff. The greater the value, the greater the peak.||Not used|
||Standard second-order bandpass filter. Frequencies outside the given range of frequencies are attenuated; the frequencies inside it pass through.||The center of the range of frequencies.||Controls the width of the frequency band. The greater the
||Standard second-order lowshelf filer. Frequencies lower than the frequency get a boost, or an attenuation; frequencies over it are unchanged.||The upper limit of the frequencies getting a boost or an attenuation.||Not used||The boost, in dB, to be applied; if negative, it will be an attenuation.|
||Standard second-order highshelf filer. Frequencies higher than the frequency get a boost or an attenuation; frequencies lower than it are unchanged.||The lower limit of the frequencies getting a boost or an attenuation.||Not used||The boost, in dB, to be applied; if negative, it will be an attenuation.|
||Frequencies inside the range get a boost or an attenuation; frequencies outside it are unchanged.||The middle of the frequency range getting a boost or an attenuation.||Controls the width of the frequency band. The greater the
||The boost, in dB, to be applied; if negative, it will be an attenuation.|
||Standard notch filter, also called a band-stop or band-rejection filter. It is the opposite of a bandpass filter: frequencies outside the give range of frequencies pass through; frequencies inside it are attenuated.||The center of the range of frequencies.||Controls the width of the frequency band. The greater the
||Standard second-order allpass filter. It Lets all frequencies through, but changes the phase-relationship between the various frequencies.||The frequency with the maximal group delay, that is, the frequency where the center of the phase transition occurs.||Controls how sharp the transition is at the medium frequency. The larger this parameter is, the sharper and larger the transition will be.||Not used|
var audioCtx = new (window.AudioContext || window.webkitAudioContext)(); //set up the different audio nodes we will use for the app var analyser = audioCtx.createAnalyser(); var distortion = audioCtx.createWaveShaper(); var gainNode = audioCtx.createGain(); var biquadFilter = audioCtx.createBiquadFilter(); var convolver = audioCtx.createConvolver(); // connect the nodes together source = audioCtx.createMediaStreamSource(stream); source.connect(analyser); analyser.connect(distortion); distortion.connect(biquadFilter); biquadFilter.connect(convolver); convolver.connect(gainNode); gainNode.connect(audioCtx.destination); // Manipulate the Biquad filter biquadFilter.type = "lowshelf"; biquadFilter.frequency.value = 1000; biquadFilter.gain.value = 25;
|Web Audio API
The definition of 'type' in that specification.
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
|Chrome Full support 14||Edge Full support 12||Firefox Full support 25||IE No support No||Opera Full support 15||Safari Full support 6||WebView Android Full support Yes||Chrome Android Full support 18||Firefox Android Full support 26||Opera Android Full support 14||Safari iOS Full support Yes||Samsung Internet Android Full support 1.0|
- Full support
- Full support
- No support
- No support