akasha.audio

Class AnalyserNode

java.lang.Object

akasha.EventTarget

akasha.audio.AudioNode

akasha.audio.AnalyserNode

@Generated(value="org.realityforge.webtack")
 @JsType(isNative=true,
        namespace="<global>",
        name="AnalyserNode")
public class AnalyserNode
extends AudioNode

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.

See Also:

AnalyserNode - MDN, AnalyserNode - Web Audio API

Field Summary

Fields

Modifier and Type	Field and Description
int	fftSize The fftSize property of the AnalyserNode interface is an unsigned long value and represents the window size in samples that is used when performing a Fast Fourier Transform (FFT) to get frequency domain data.
double	maxDecibels The maxDecibels property of the AnalyserNode interface is a double value representing the maximum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte/float values — basically, this specifies the maximum value for the range of results when using getFloatFrequencyData() or getByteFrequencyData().
double	minDecibels The minDecibels property of the AnalyserNode interface is a double value representing the minimum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte/float values — basically, this specifies the minimum value for the range of results when using getFloatFrequencyData() or getByteFrequencyData().
double	smoothingTimeConstant The smoothingTimeConstant property of the AnalyserNode interface is a double value representing the averaging constant with the last analysis frame.

Fields inherited from class akasha.audio.AudioNode

channelCount, channelCountMode, channelInterpretation

Constructor Summary

Constructors

Constructor and Description
AnalyserNode(BaseAudioContext context) The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.
AnalyserNode(BaseAudioContext context, AnalyserOptions options) The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.

Method Summary

Modifier and Type	Method and Description
int	frequencyBinCount() The frequencyBinCount read-only property of the AnalyserNode interface is an unsigned integer half that of the AnalyserNode.fftSize.
void	getByteFrequencyData(Uint8Array array) The getByteFrequencyData() method of the AnalyserNode interface copies the current frequency data into a Uint8Array (unsigned byte array) passed into it.
void	getByteTimeDomainData(Uint8Array array) The getByteTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Uint8Array (unsigned byte array) passed into it.
void	getFloatFrequencyData(Float32Array array) The getFloatFrequencyData() method of the AnalyserNode Interface copies the current frequency data into a Float32Array array passed into it.
void	getFloatTimeDomainData(Float32Array array) The getFloatTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Float32Array array passed into it.

Methods inherited from class akasha.audio.AudioNode

connect, connect, connect, connect, connect, context, disconnect, disconnect, disconnect, disconnect, disconnect, disconnect, disconnect, numberOfInputs, numberOfOutputs

Methods inherited from class akasha.EventTarget

addEventListener, addEventListener, addEventListener, dispatchEvent, removeEventListener, removeEventListener, removeEventListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fftSize

public int fftSize

The fftSize property of the AnalyserNode interface is an unsigned long value and represents the window size in samples that is used when performing a Fast Fourier Transform (FFT) to get frequency domain data.

See Also:

AnalyserNode.fftSize - MDN, fftSize - Web Audio API

maxDecibels

public double maxDecibels

The maxDecibels property of the AnalyserNode interface is a double value representing the maximum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte/float values — basically, this specifies the maximum value for the range of results when using getFloatFrequencyData() or getByteFrequencyData().

See Also:

AnalyserNode.maxDecibels - MDN, maxDecibels - Web Audio API

minDecibels

public double minDecibels

The minDecibels property of the AnalyserNode interface is a double value representing the minimum power value in the scaling range for the FFT analysis data, for conversion to unsigned byte/float values — basically, this specifies the minimum value for the range of results when using getFloatFrequencyData() or getByteFrequencyData().

See Also:

AnalyserNode.minDecibels - MDN, minDecibels - Web Audio API

smoothingTimeConstant

public double smoothingTimeConstant

The smoothingTimeConstant property of the AnalyserNode interface is a double value representing the averaging constant with the last analysis frame. It's basically an average between the current buffer and the last buffer the AnalyserNode processed, and results in a much smoother set of value changes over time.

See Also:

AnalyserNode.smoothingTimeConstant - MDN, smoothingTimeConstant - Web Audio API

Constructor Detail

AnalyserNode

public AnalyserNode(@Nonnull
                    BaseAudioContext context,
                    @Nonnull
                    AnalyserOptions options)

The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.

See Also:

AnalyserNode.AnalyserNode - MDN, AnalyserNode() constructor - Web Audio API

AnalyserNode

public AnalyserNode(@Nonnull
                    BaseAudioContext context)

The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.

See Also:

AnalyserNode.AnalyserNode - MDN, AnalyserNode() constructor - Web Audio API

Method Detail

frequencyBinCount

@JsProperty(name="frequencyBinCount")
public int frequencyBinCount()

The frequencyBinCount read-only property of the AnalyserNode interface is an unsigned integer half that of the AnalyserNode.fftSize. This generally equates to the number of data values you will have to play with for the visualization.

See Also:

AnalyserNode.frequencyBinCount - MDN, frequencyBinCount - Web Audio API

getByteFrequencyData

public void getByteFrequencyData(@Nonnull
                                 Uint8Array array)

The getByteFrequencyData() method of the AnalyserNode interface copies the current frequency data into a Uint8Array (unsigned byte array) passed into it.

See Also:

AnalyserNode.getByteFrequencyData - MDN, getByteFrequencyData() - Web Audio API

getByteTimeDomainData

public void getByteTimeDomainData(@Nonnull
                                  Uint8Array array)

The getByteTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Uint8Array (unsigned byte array) passed into it.

See Also:

AnalyserNode.getByteTimeDomainData - MDN, getByteTimeDomainData() - Web Audio API

getFloatFrequencyData

public void getFloatFrequencyData(@Nonnull
                                  Float32Array array)

The getFloatFrequencyData() method of the AnalyserNode Interface copies the current frequency data into a Float32Array array passed into it.

See Also:

AnalyserNode.getFloatFrequencyData - MDN, getFloatFrequencyData() - Web Audio API

getFloatTimeDomainData

public void getFloatTimeDomainData(@Nonnull
                                   Float32Array array)

The getFloatTimeDomainData() method of the AnalyserNode Interface copies the current waveform, or time-domain, data into a Float32Array array passed into it.

See Also:

AnalyserNode.getFloatTimeDomainData - MDN, getFloatTimeDomainData() - Web Audio API