{"json_modified": "2016-09-07T16:50:34.470661", "uuid": "2feac788-5b1c-472b-bbdd-4d089301ce28", "title": "AudioContext.createIIRFilter()", "url": "/en-US/docs/Web/API/AudioContext/createIIRFilter", "tags": ["API", "CreateIIRFilter", "Reference", "AudioContext", "audio", "Audio", "Web Audio API", "filter", "Method"], "translations": [], "modified": "2016-09-07T16:50:34", "label": "AudioContext.createIIRFilter()", "localization_tags": [], "locale": "en-US", "id": 179740, "last_edit": "2016-09-07T16:47:28", "summary": "The <strong><code>createIIRFilter()</code></strong> method of the <a href=\"/en-US/docs/Web/API/AudioContext\" title=\"An AudioContext can be a target of events, therefore it implements the EventTarget interface.\"><code>AudioContext</code></a> interface creates an <a href=\"/en-US/docs/Web/API/IIRFilterNode\" title=\"The&#xA0;IIRFilterNode&#xA0;interface of the&#xA0;Web Audio API&#xA0;is a AudioNode processor which implements a general infinite impulse response (IIR)&#xA0; filter; this type of filter can be used to implement tone control devices and graphic equalizers as well. It lets the parameters of the filter response be specified, so that it can be tuned as needed.\"><code>IIRFilterNode</code></a>, which represents a general <strong><a href=\"https://en.wikipedia.org/wiki/infinite impulse response\" title=\"infinite impulse response\">infinite impulse response</a></strong> (IIR) filter which can be configured to serve as various types of filter.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Description", "title": "Return value"}, {"id": "Exceptions", "title": "Exceptions"}, {"id": "Example", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/AudioContext/createIIRFilter", "review_tags": ["technical"]}