BiquadFilterNode

open class BiquadFilterNode(context: BaseAudioContext, options: BiquadFilterOptions = definedExternally) : AudioNode(source)

The BiquadFilterNode interface represents a simple low-order filter, and is created using the BaseAudioContext/createBiquadFilter method.

MDN Reference

Constructors

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constructor(context: BaseAudioContext, options: BiquadFilterOptions = definedExternally)

Properties

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The channelCount property of the AudioNode interface represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node.

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The channelCountMode property of the AudioNode interface represents an enumerated value describing the way channels must be matched between the node's inputs and outputs.

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The channelInterpretation property of the AudioNode interface represents an enumerated value describing how input channels are mapped to output channels when the number of inputs/outputs is different.

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The read-only context property of the the node is participating in.

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The detune property of the BiquadFilterNode interface is an a-rate AudioParam representing detuning of the frequency in cents.

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The frequency property of the BiquadFilterNode interface is an a-rate AudioParam — a double representing a frequency in the current filtering algorithm measured in hertz (Hz).

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The gain property of the BiquadFilterNode interface is an a-rate AudioParam — a double representing the gain used in the current filtering algorithm.

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The numberOfInputs property of the AudioNode interface returns the number of inputs feeding the node.

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The numberOfOutputs property of the AudioNode interface returns the number of outputs coming out of the node.

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The Q property of the BiquadFilterNode interface is an a-rate AudioParam, a double representing a Q factor, or quality factor.

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The type property of the BiquadFilterNode interface is a string (enum) value defining the kind of filtering algorithm the node is implementing.

Functions

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fun connect(destinationParam: AudioParam, output: Int = definedExternally)

fun connect(destinationNode: AudioNode, output: Int = definedExternally, input: Int = definedExternally): AudioNode

The connect() method of the AudioNode interface lets you connect one of the node's outputs to a target, which may be either another AudioNode (thereby directing the sound data to the specified node) or an change the value of that parameter over time.

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The disconnect() method of the AudioNode interface lets you disconnect one or more nodes from the node on which the method is called.

fun disconnect(output: Int)
fun disconnect(destinationNode: AudioNode)
fun disconnect(destinationParam: AudioParam)
fun disconnect(destinationNode: AudioNode, output: Int)
fun disconnect(destinationParam: AudioParam, output: Int)
fun disconnect(destinationNode: AudioNode, output: Int, input: Int)
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fun getFrequencyResponse(    frequencyHz: Float32Array<ArrayBuffer>,     magResponse: Float32Array<ArrayBuffer>,     phaseResponse: Float32Array<ArrayBuffer>)

The getFrequencyResponse() method of the BiquadFilterNode interface takes the current filtering algorithm's settings and calculates the frequency response for frequencies specified in a specified array of frequencies.

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