1. @DomName('AudioContext.createIIRFilter')
  2. @DocsEditable()
  3. @Experimental()
IirFilterNode createIirFilter(List<num> feedForward, List<num> feedBack)

Source 

@DomName('AudioContext.createIIRFilter')
@DocsEditable()
@Experimental() // untriaged
IirFilterNode createIirFilter(List<num> feedForward, List<num> feedBack) =>
    _blink.BlinkAudioContext.instance
        .createIIRFilter_Callback_2_(this, feedForward, feedBack);