Module javafx.media

Package javafx.scene.media

Class EqualizerBand

java.lang.Object

javafx.scene.media.EqualizerBand

public final class EqualizerBand
extends Object

The EqualizerBand class provides control for each band in the AudioEqualizer.

Since:

JavaFX 2.0

See Also:

• AudioEqualizer

Property Summary

Properties

Type	Property	Description
DoubleProperty	bandwidth	Bandwidth of the band in Hertz.
DoubleProperty	centerFrequency	Center frequency of the band in Hertz.
DoubleProperty	gain	The gain to be applied to the frequencies of this band.

Field Summary

Fields

Modifier and Type	Field	Description
static final double	MAX_GAIN	Maximum possible gain value.
static final double	MIN_GAIN	Minimum possible gain value.

Constructor Summary

Constructors

Constructor	Description
EqualizerBand()	EqualizerBand default constructor.
EqualizerBand(double centerFrequency, double bandwidth, double gain)	Custom EqualizerBand constructor.

Method Summary

Modifier and Type	Method	Description
DoubleProperty	bandwidthProperty()	Bandwidth of the band in Hertz.
DoubleProperty	centerFrequencyProperty()	Center frequency of the band in Hertz.
DoubleProperty	gainProperty()	The gain to be applied to the frequencies of this band.
final double	getBandwidth()	Retrieve the bandwidth of the band.
final double	getCenterFrequency()	Retrieve the center frequency of the band.
final double	getGain()	Retrieve the gain to be applied to the band.
final void	setBandwidth(double value)	Set the bandwidth of the band in Hertz.
final void	setCenterFrequency(double value)	Set the center frequency on the band in Hertz.
final void	setGain(double value)	Set the gain of the band in dB.

Methods declared in class java.lang.Object

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

Property Details

centerFrequency

public DoubleProperty centerFrequencyProperty

Center frequency of the band in Hertz. The default value is 0.0 Hz.

See Also:

• getCenterFrequency()
• setCenterFrequency(double)
• centerFrequencyProperty()

bandwidth

public DoubleProperty bandwidthProperty

Bandwidth of the band in Hertz. The default value is 0.0 Hz.

See Also:

• getBandwidth()
• setBandwidth(double)
• bandwidthProperty()

gain

public DoubleProperty gainProperty

The gain to be applied to the frequencies of this band. The default value is 0.0 dB.

See Also:

• getGain()
• setGain(double)
• gainProperty()

Field Details

MIN_GAIN

public static final double MIN_GAIN

Minimum possible gain value. In the current implementation this value is -24.0 dB.

See Also:

• Constant Field Values

MAX_GAIN

public static final double MAX_GAIN

Maximum possible gain value. In the current implementation this value is 12.0 dB.

See Also:

• Constant Field Values

Constructor Details

EqualizerBand

public EqualizerBand()

EqualizerBand default constructor. It creates an instance with centerFrequency, bandwidth and gain set to 0.

EqualizerBand

public EqualizerBand(double centerFrequency,
 double bandwidth,
 double gain)

Custom EqualizerBand constructor. It creates an instance from the centerFrequency, bandwidth and gain parameters. The gain specifies the amount of amplification (gain > 0.0 dB) or attenuation (gain < 0.0 dB) to be applied to the center frequency of the band. The bandwidth is the frequency spread between the upper and lower edges of the equalizer transfer function which have half the dB gain of the peak (center frequency).

Parameters:

centerFrequency - a positive value specifying the center frequency of the band in Hertz.

bandwidth - a positive value specifying the bandwidth of the band in Hertz.

gain - the gain in decibels to be applied to the band in the range [MIN_GAIN, MAX_GAIN] dB.

Method Details

setCenterFrequency

public final void setCenterFrequency(double value)

Set the center frequency on the band in Hertz.

Parameters:

value - the center frequency which must be a positive value in Hz.

getCenterFrequency

public final double getCenterFrequency()

Retrieve the center frequency of the band.

Returns:

the center frequency on the band in Hertz.

centerFrequencyProperty

public DoubleProperty centerFrequencyProperty()

Center frequency of the band in Hertz. The default value is 0.0 Hz.

Returns:

the centerFrequency property

See Also:

• getCenterFrequency()
• setCenterFrequency(double)

setBandwidth

public final void setBandwidth(double value)

Set the bandwidth of the band in Hertz.

Parameters:

value - the bandwidth which must be a positive value in Hz.

getBandwidth

public final double getBandwidth()

Retrieve the bandwidth of the band.

Returns:

the bandwidth of the band in Hertz.

bandwidthProperty

public DoubleProperty bandwidthProperty()

Bandwidth of the band in Hertz. The default value is 0.0 Hz.

Returns:

the bandwidth property

See Also:

• getBandwidth()
• setBandwidth(double)

setGain

public final void setGain(double value)

Set the gain of the band in dB. Gain property is limited to be within the interval MIN_GAIN to MAX_GAIN.

Parameters:

value - the gain in the range [MIN_GAIN, MAX_GAIN].

getGain

public final double getGain()

Retrieve the gain to be applied to the band.

Returns:

the gain of the band in dB.

gainProperty

public DoubleProperty gainProperty()

The gain to be applied to the frequencies of this band. The default value is 0.0 dB.

Returns:

the gain property

See Also:

• getGain()
• setGain(double)