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BaseAudioContext: createIIRFilter() method - Web APIs | MDN
createIIRFilter(feedforward, feedback)
feedforward
An array of floating-point values specifying the feedforward (numerator)
coefficients for the transfer function of the IIR filter. The maximum length of this
array is 20, and at least one value must be nonzero.
feedback
An array of floating-point values specifying the feedback (denominator) coefficients
for the transfer function of the IIR filter. This array may have up to 20 members, the
first of which must not be zero.
An IIRFilterNode
InvalidStateError DOMException
Thrown if all of the feedforward coefficients are 0, or if the first
feedback coefficient is 0.
NotSupportedError DOMException
Thrown if one or both of the input arrays exceeds 20 members.
