javazoom.jl.decoder

Class Equalizer

java.lang.Object

javazoom.jl.decoder.Equalizer

public final class Equalizer
extends Object

The Equalizer class can be used to specify equalization settings for the MPEG audio decoder.

The equalizer consists of 32 band-pass filters. Each band of the equalizer can take on a fractional value between -1.0 and +1.0. At -1.0, the input signal is attenuated by 6dB, at +1.0 the signal is amplified by 6dB.

Author:

MDM

See Also:

Decoder

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Equalizer.EQFunction

Field Summary

Fields

Modifier and Type	Field and Description
static float	BAND_NOT_PRESENT Equalizer setting to denote that a given band will not be present in the output signal.
static Equalizer	PASS_THRU_EQ

Constructor Summary

Constructors

Constructor and Description
Equalizer() Creates a new Equalizer instance.
Equalizer(Equalizer.EQFunction eq)
Equalizer(float[] settings)

Method Summary

Modifier and Type	Method and Description
float	getBand(int band) Retrieves the EQ setting for a given band.
int	getBandCount() Retrieves the number of bands present in this equalizer.
void	reset() Sets all bands to 0.0
float	setBand(int band, float neweq)
void	setFrom(Equalizer.EQFunction eq)
void	setFrom(Equalizer eq) Sets the bands of this equalizer to the value the bands of another equalizer.
void	setFrom(float[] eq)

Methods inherited from class java.lang.Object

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

Field Detail

BAND_NOT_PRESENT

public static final float BAND_NOT_PRESENT

Equalizer setting to denote that a given band will not be present in the output signal.

See Also:

Constant Field Values

PASS_THRU_EQ

public static final Equalizer PASS_THRU_EQ

Constructor Detail

Equalizer

public Equalizer()

Creates a new Equalizer instance.

Equalizer

public Equalizer(float[] settings)

Equalizer

public Equalizer(Equalizer.EQFunction eq)

Method Detail

setFrom

public void setFrom(float[] eq)

setFrom

public void setFrom(Equalizer.EQFunction eq)

setFrom

public void setFrom(Equalizer eq)

Sets the bands of this equalizer to the value the bands of another equalizer. Bands that are not present in both equalizers are ignored.

reset

public void reset()

Sets all bands to 0.0

getBandCount

public int getBandCount()

Retrieves the number of bands present in this equalizer.

setBand

public float setBand(int band,
                     float neweq)

getBand

public float getBand(int band)

Retrieves the EQ setting for a given band.