AnalyserNode
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The EventTarget.addEventListener() method registers the specified listener on the EventTarget it's called on.
The EventTarget.addEventListener() method registers the specified listener on the EventTarget it's called on. The event target may be an Element in a document, the Document itself, a Window, or any other object that supports events (such as XMLHttpRequest).
MDN
Represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node.
Represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node. Its usage and precise definition depend on the value of AudioNode.channelCountMode.
Represents an enumerated value describing the way channels must be matched between the node's inputs and outputs.
Represents an enumerated value describing the way channels must be matched between the node's inputs and outputs.
Represents an enumerated value describing the meaning of the channels.
Represents an enumerated value describing the meaning of the channels. This interpretation will define how audio up-mixing and down-mixing will happen.
The possible values are "speakers" or "discrete".
Allows us to connect one output of this node to one input of an audio parameter.
Allows us to connect one output of this node to one input of an audio parameter.
Allows us to connect one output of this node to one input of another node.
Allows us to connect one output of this node to one input of another node.
Returns the associated AudioContext, that is the object representing the processing graph the node is participating in.
Returns the associated AudioContext, that is the object representing the processing graph the node is participating in.
Allows us to disconnect the current node from another one it is already connected to.
Allows us to disconnect the current node from another one it is already connected to.
The index describing which output of the AudioNode is going to be disconnected.
Dispatches an Event at the specified EventTarget, invoking the affected EventListeners in the appropriate order.
Dispatches an Event at the specified EventTarget, invoking the affected EventListeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) apply to events dispatched manually with dispatchEvent().
MDN
Is an unsigned long value representing the size of the FFT (Fast Fourier Transform) to be used to determine the frequency domain.
Is an unsigned long value half that of the FFT size.
Is an unsigned long value half that of the FFT size. This generally equates to the number of data values you will have to play with for the visualization.
Copies the current frequency data into a Uint8Array (unsigned byte array) passed into it.
Copies the current frequency data into a Uint8Array (unsigned byte array) passed into it.
If the array has fewer elements than the AnalyserNode.frequencyBinCount, excess elements are dropped. If it has more elements than needed, excess elements are ignored.
The Uint8Array that the frequency domain data will be copied to.
Copies the current waveform, or time-domain, data into a Uint8Array (unsigned byte array) passed into it.
Copies the current waveform, or time-domain, data into a Uint8Array (unsigned byte array) passed into it.
If the array has fewer elements than the AnalyserNode.fftSize, excess elements are dropped. If it has more elements than needed, excess elements are ignored.
The Uint8Array that the time domain data will be copied to.
Copies the current frequency data into a Float32Array array passed into it.
Copies the current frequency data into a Float32Array array passed into it.
If the array has fewer elements than the AnalyserNode.frequencyBinCount, excess elements are dropped. If it has more elements than needed, excess elements are ignored.
The Float32Array that the frequency domain data will be copied to.
Copies the current waveform, or time-domain, data into a Float32Array array passed into it.
Copies the current waveform, or time-domain, data into a Float32Array array passed into it.
If the array has fewer elements than the AnalyserNode.fftSize, excess elements are dropped. If it has more elements than needed, excess elements are ignored.
The Float32Array that the time domain data will be copied to.
Is a double value representing the maximum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte values — basically, this specifies the maximum value for the range of results when using getByteFrequencyData().
Is a double value representing the minimum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte values — basically, this specifies the minimum value for the range of results when using getByteFrequencyData().
Returns the number of inputs feeding the node.
Returns the number of inputs feeding the node. Source nodes are defined as nodes having a numberOfInputs property with a value of 0.
Returns the number of outputs coming out of the node.
Returns the number of outputs coming out of the node. Destination nodes — like AudioDestinationNode — have a value of 0 for this attribute.
Removes the event listener previously registered with EventTarget.addEventListener.
Removes the event listener previously registered with EventTarget.addEventListener.
MDN
Is a double value representing the averaging constant with the last analysis frame — basically, it makes the transition between values over time smoother.
The AnalyserNode interface represents a node able to provide real-time frequency and time-domain analysis information. It is an AudioNode that passes the audio stream unchanged from the input to the output, but allows you to take the generated data,process it, and create audio visualizations.
An AnalyzerNode has exactly one input and one output. The node works even if the output is not connected.