AnalyserNode extension type

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 AnalyserNode has exactly one input and one output. The node works even if the output is not connected.

Without modifying the audio stream, the node allows to get the frequency and time-domain data associated to it, using a FFT.

Number of inputs 1
Number of outputs 1 (but may be left unconnected)
Channel count mode "max"
Channel count 2
Channel interpretation "speakers"
on
Implemented types

Constructors

AnalyserNode(BaseAudioContext context, [AnalyserOptions options])
factory

Properties

channelCount ↔ int
getter/setter pairinherited
channelCountMode ↔ ChannelCountMode
getter/setter pairinherited
channelInterpretation ↔ ChannelInterpretation
getter/setter pairinherited
context → BaseAudioContext
no setterinherited
fftSize ↔ int
getter/setter pair
frequencyBinCount → int
no setter
hashCode → int
The hash code for this object.
no setterinherited
maxDecibels ↔ num
getter/setter pair
minDecibels ↔ num
getter/setter pair
numberOfInputs → int
no setterinherited
numberOfOutputs → int
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
smoothingTimeConstant ↔ num
getter/setter pair

Methods

addEventListener(String type, EventListener? callback, [JSAny options]) → void
The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
inherited
connect(JSObject destinationNodeOrDestinationParam, [int output, int input]) → 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 AudioParam, so that the node's output data is automatically used to change the value of that parameter over time.
inherited
disconnect([JSAny destinationNodeOrDestinationParamOrOutput, int output, int input]) → void
The disconnect() method of the AudioNode interface lets you disconnect one or more nodes from the node on which the method is called.
inherited
dispatchEvent(Event event) → bool
The dispatchEvent() method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().
inherited
getByteFrequencyData(JSUint8Array array) → void
The getByteFrequencyData() method of the AnalyserNode interface copies the current frequency data into a Uint8Array (unsigned byte array) passed into it.
getByteTimeDomainData(JSUint8Array array) → void
The getByteTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Uint8Array (unsigned byte array) passed into it.
getFloatFrequencyData(JSFloat32Array array) → void
The getFloatFrequencyData() method of the AnalyserNode Interface copies the current frequency data into a Float32Array array passed into it. Each array value is a sample, the magnitude of the signal at a particular time.
getFloatTimeDomainData(JSFloat32Array array) → void
The getFloatTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Float32Array array passed into it. Each array value is a sample, the magnitude of the signal at a particular time.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeEventListener(String type, EventListener? callback, [JSAny options]) → void
The removeEventListener() method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited