Top Description Methods
javafx.scene.media

public Interface AudioSpectrumListener

Audio spectrum callback interface. The observer receives periodic updates of the audio spectrum. A single observer may be attached to a given MediaPlayer using MediaPlayer#setAudioSpectrumListener.
Since
JavaFX 2.0
See Also
MediaPlayer

Method Summary

Modifier and TypeMethod and Description
public void
spectrumDataUpdate(double
timestamp of the event in seconds.
timestamp, double
duration for which the spectrum was computed in seconds.
duration, float[]
array containing the non-positive spectrum magnitude in decibels (dB) for each band. The size of the array equals the number of bands and should be considered to be read-only.
magnitudes, float[]
array containing the phase in the range [Math.PI, Math.PI] for each band. The size of the array equals the number of bands and should be considered to be read-only.
phases)

Notifies the observer about new data available for the audio spectrum.

Method Detail

spectrumDataUpdateback to summary
public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases)

Notifies the observer about new data available for the audio spectrum.

The notification period for updates may be set using MediaPlayer#setAudioSpectrumInterval, and the number of bands and sensitivity threshold via MediaPlayer#setAudioSpectrumNumBands and MediaPlayer#setAudioSpectrumThreshold, respectively. The default values of the settings are an interval of 0.1 seconds, 128 bands, and sensitivity threshold -60.0 dB.

The arrays passed to the listener should be considered to be read-only as the underlying implementation may re-use them.

Parameters
timestamp:double

timestamp of the event in seconds.

duration:double

duration for which the spectrum was computed in seconds.

magnitudes:float[]

array containing the non-positive spectrum magnitude in decibels (dB) for each band. The size of the array equals the number of bands and should be considered to be read-only.

phases:float[]

array containing the phase in the range [Math.PI, Math.PI] for each band. The size of the array equals the number of bands and should be considered to be read-only.