edu.cmu.sphinx.frontend.transform

Class DiscreteCosineTransform2

java.lang.Object

edu.cmu.sphinx.util.props.ConfigurableAdapter

edu.cmu.sphinx.frontend.BaseDataProcessor

edu.cmu.sphinx.frontend.transform.DiscreteCosineTransform

edu.cmu.sphinx.frontend.transform.DiscreteCosineTransform2

All Implemented Interfaces:

DataProcessor, Configurable

public class DiscreteCosineTransform2
extends DiscreteCosineTransform

Applies the optimized MelCosine filter used in pocketsphinx to the given melspectrum.

Field Summary

Fields inherited from class edu.cmu.sphinx.frontend.transform.DiscreteCosineTransform

cepstrumSize, melcosine, numberMelFilters, PROP_CEPSTRUM_LENGTH, PROP_NUMBER_FILTERS

Fields inherited from class edu.cmu.sphinx.util.props.ConfigurableAdapter

logger

Constructor Summary

Constructors

Constructor and Description
DiscreteCosineTransform2()
DiscreteCosineTransform2(int numberMelFilters, int cepstrumSize)

Method Summary

Modifier and Type	Method and Description
protected double[]	applyMelCosine(double[] melspectrum) Apply the optimized MelCosine filter used in pocketsphinx to the given melspectrum.
void	newProperties(PropertySheet ps) This method is called when this configurable component needs to be reconfigured.

Methods inherited from class edu.cmu.sphinx.frontend.transform.DiscreteCosineTransform

computeMelCosine, getData, initialize

Methods inherited from class edu.cmu.sphinx.frontend.BaseDataProcessor

getPredecessor, setPredecessor

Methods inherited from class edu.cmu.sphinx.util.props.ConfigurableAdapter

getName, initLogger, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DiscreteCosineTransform2

public DiscreteCosineTransform2(int numberMelFilters,
                                int cepstrumSize)

DiscreteCosineTransform2

public DiscreteCosineTransform2()

Method Detail

newProperties

public void newProperties(PropertySheet ps)
                   throws PropertyException

Description copied from interface: Configurable

This method is called when this configurable component needs to be reconfigured.

Specified by:

newProperties in interface Configurable

Overrides:

newProperties in class DiscreteCosineTransform

Parameters:

ps - a property sheet holding the new data

Throws:

PropertyException - if there is a problem with the properties.

applyMelCosine

protected double[] applyMelCosine(double[] melspectrum)

Apply the optimized MelCosine filter used in pocketsphinx to the given melspectrum.

Overrides:

applyMelCosine in class DiscreteCosineTransform

Parameters:

melspectrum - the MelSpectrum data

Returns:

MelCepstrum data produced by apply the MelCosine filter to the MelSpectrum data