net.beadsproject.beads.analysis.featureextractors

Class MFCC

java.lang.Object

net.beadsproject.beads.core.Bead

net.beadsproject.beads.analysis.FeatureExtractor<float[],float[]>

net.beadsproject.beads.analysis.featureextractors.MFCC

public class MFCC
extends FeatureExtractor<float[],float[]>

MFCC generates mel-frequency spectral coefficients, an important feature type in music and speech processing. MFCC receives feature data from a MelSpectrum, and must be set as a listener to a MelSpectrum, not a pure audio stream, in order to work properly.

Field Summary

Fields inherited from class net.beadsproject.beads.analysis.FeatureExtractor

featureDescriptions, features, name, numFeatures

Constructor Summary

Constructors

Constructor and Description
MFCC(int numCoeffs) Instantiates a new MFCC.

Method Summary

Modifier and Type	Method and Description
void	process(TimeStamp startTime, TimeStamp endTime, float[] melSpectrum) Process some data of type P (specified by the class def).
void	setNumberOfFeatures(int num) Sets the number of features.

Methods inherited from class net.beadsproject.beads.analysis.FeatureExtractor

addListener, forward, getFeatureDescriptions, getFeatures, getName, getNumberOfFeatures, removeListener, setName

Methods inherited from class net.beadsproject.beads.core.Bead

getKillListener, isDeleted, isPaused, kill, message, messageReceived, pause, setKillListener, start, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MFCC

public MFCC(int numCoeffs)

Instantiates a new MFCC.

Parameters:

numCoeffs - the number of coefficients to generate.

Method Detail

setNumberOfFeatures

public void setNumberOfFeatures(int num)

Description copied from class: FeatureExtractor

Sets the number of features.

Overrides:

setNumberOfFeatures in class FeatureExtractor<float[],float[]>

Parameters:

num - the new number of features.

process

public void process(TimeStamp startTime,
                    TimeStamp endTime,
                    float[] melSpectrum)

Description copied from class: FeatureExtractor

Process some data of type P (specified by the class def). This method must be overidden by implementing classes.

Specified by:

process in class FeatureExtractor<float[],float[]>

melSpectrum - the data.