javafx.scene.media

Class AudioEqualizer

java.lang.Object

javafx.scene.media.AudioEqualizer

public final class AudioEqualizer
extends java.lang.Object

The AudioEqualizer class provides audio equalization control for a media player. It contains an ObservableList of EqualizerBand elements. Each AudioEqualizer instance is connected to a MediaPlayer and may be obtained using the MediaPlayer.getAudioEqualizer method.

See Also:

MediaPlayer, EqualizerBand

Property Summary

Properties

Type	Property and Description
BooleanProperty	enabled Whether the AudioEqualizer is enabled.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_NUM_BANDS Maximum number of bands an AudioEqualizer may contain.

Method Summary

Methods

Modifier and Type	Method and Description
BooleanProperty	enabledProperty() Whether the AudioEqualizer is enabled.
ObservableList<EqualizerBand>	getBands() ObservableList containing EqualizerBand elements.
boolean	isEnabled() Return enabled state of the AudioEqualizer.
void	setEnabled(boolean value) Enables or disables AudioEqualizer.

Methods inherited from class java.lang.Object

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

Property Detail

enabled

public BooleanProperty enabledProperty

Whether the AudioEqualizer is enabled. The default value is true.

See Also:

isEnabled(), setEnabled(boolean)

Field Detail

MAX_NUM_BANDS

public static final int MAX_NUM_BANDS

Maximum number of bands an AudioEqualizer may contain. In the current implementation this value is 64.

See Also:

Constant Field Values

Method Detail

getBands

public final ObservableList<EqualizerBand> getBands()

ObservableList containing EqualizerBand elements. The content of the sequence may be changed by adding or removing EqualizerBand elements. When adding elements, the user must be prepared to catch IllegalArgumentExceptions because the internal list is a VetoableObservableList and any change to the list can be vetoed if a newly added instance is not valid.

The constraints for a valid EqualizerBand instance are:

• EqualizerBand.centerFrequency > 0
• EqualizerBand.bandwidth > 0
• EqualizerBand.MIN_GAIN ≤ EqualizerBand.gain ≤ EqualizerBand.MAX_GAIN

The default set of bands is as in the following table; all bands have unity gain (0 dB).

Band Index	Center Frequency (Hz)	Bandwidth (Hz)
0	32	19
1	64	39
2	125	78
3	250	156
4	500	312
5	1000	625
6	2000	1250
7	4000	2500
8	8000	5000
9	16000	10000

Returns:

ObservableList containing EqualizerBand elements.

Throws:

java.lang.IllegalArgumentException

setEnabled

public final void setEnabled(boolean value)

Enables or disables AudioEqualizer. If the enabled property is set to false, AudioEqualizer settings are preserved but not taken into account during playback, which is equivalent to setting all EqualizerBand.gain properties to zero.

isEnabled

public final boolean isEnabled()

Return enabled state of the AudioEqualizer.

Returns:

true if AudioEqulizer is enabled, false otherwise.

enabledProperty

public BooleanProperty enabledProperty()

Whether the AudioEqualizer is enabled. The default value is true.

See Also:

isEnabled(), setEnabled(boolean)