edu.cmu.sphinx.frontend.feature

Class FeatureTransform

java.lang.Object

edu.cmu.sphinx.util.props.ConfigurableAdapter

edu.cmu.sphinx.frontend.BaseDataProcessor

edu.cmu.sphinx.frontend.feature.FeatureTransform

All Implemented Interfaces:

DataProcessor, Configurable

public class FeatureTransform
extends BaseDataProcessor

Implements a linear feature transformation transformation. It might be a dimension reduction or just a decorrelation transform. This component requires a special model trained with LDA/MLLT transform.

Field Summary

Fields

Modifier and Type	Field and Description
protected Loader	loader
static java.lang.String	PROP_LOADER The name of the transform matrix file.

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

logger

Constructor Summary

Constructors

Constructor and Description
FeatureTransform()
FeatureTransform(Loader loader)

Method Summary

Modifier and Type	Method and Description
Data	getData() Returns the next Data object being processed by this LDA, or if it is a Signal, it is returned without modification.
void	newProperties(PropertySheet ps) This method is called when this configurable component needs to be reconfigured.

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

getPredecessor, initialize, 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

Field Detail

PROP_LOADER

@S4Component(type=Loader.class)
public static final java.lang.String PROP_LOADER

The name of the transform matrix file.

See Also:

Constant Field Values

loader

protected Loader loader

Constructor Detail

FeatureTransform

public FeatureTransform(Loader loader)

FeatureTransform

public FeatureTransform()

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 ConfigurableAdapter

Parameters:

ps - a property sheet holding the new data

Throws:

PropertyException - if there is a problem with the properties.

getData

public Data getData()
             throws DataProcessingException

Returns the next Data object being processed by this LDA, or if it is a Signal, it is returned without modification.

Specified by:

getData in interface DataProcessor

Specified by:

getData in class BaseDataProcessor

Returns:

the next available Data object, returns null if no Data object is available

Throws:

DataProcessingException - if there is a processing error

See Also:

Data