marf.Preprocessing
Class Preprocessing

java.lang.Object
  marf.Preprocessing.Preprocessing

All Implemented Interfaces:

StorageManager

Direct Known Subclasses:

Dummy, Endpoint, FFTFilter

public abstract class Preprocessing

extends java.lang.Object

implements StorageManager

Class Preprocessing

Abstract Preprocessing Module

$Header: /cvsroot/marf/marf/src/marf/Preprocessing/Preprocessing.java,v 1.21 2003/04/20 06:27:46 mokhov Exp $

Field Summary

protected Sample

oSample Sample container

Fields inherited from interface marf.Storage.StorageManager

DUMP_BINARY, DUMP_CSV_TEXT, DUMP_GZIP_BINARY, DUMP_XML

Constructor Summary

protected

Preprocessing(Sample poSample) Preprocessing Constructor

Method Summary

boolean	cropAudio(double pdStartingFrequency, double pdEndFrequency) Derivatives implement this method to crop arbitrary part of the audio sample.
void	dump() Not Implemented
Sample	getSample() Returns enclosed sample.
boolean	normalize() Normalization of incoming samples by amplitude.
abstract boolean	preprocess() Derivatives implement this method to do general preprocessing and perhaps calling removeNoise() and removeSilence().
boolean	removeNoise() Derivatives implement this method to remove noise from the sample.
boolean	removeSilence() Derivatives implement this method to remove silence.
void	restore() Not Implemented

Methods inherited from class java.lang.Object

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

Field Detail

oSample

protected Sample oSample

Sample container

Constructor Detail

Preprocessing

protected Preprocessing(Sample poSample)

Preprocessing Constructor

Parameters:

poSample - loaded sample by a SampleLoader

Method Detail

preprocess

public abstract boolean preprocess()
                            throws PreprocessingException

Derivatives implement this method to do general preprocessing and perhaps calling removeNoise() and removeSilence().

Returns:

boolean that sample has changed as a result of preprocessing

Throws:

PreprocessingException

removeNoise

public boolean removeNoise()
                    throws PreprocessingException

Derivatives implement this method to remove noise from the sample.

Returns:

boolean that sample has changed (noise removed)

Throws:

PreprocessingException

removeSilence

public boolean removeSilence()
                      throws PreprocessingException

Derivatives implement this method to remove silence.

Returns:

boolean that sample has changed (silence removed)

Throws:

PreprocessingException

normalize

public final boolean normalize()
                        throws PreprocessingException

Normalization of incoming samples by amplitude.

Returns:

true if the sample has been successfully normalized; false otherwise

Throws:

PreprocessingException

cropAudio

public boolean cropAudio(double pdStartingFrequency,
                         double pdEndFrequency)
                  throws PreprocessingException

Derivatives implement this method to crop arbitrary part of the audio sample.

Parameters:

pdStartingFrequency - double Fequency to start to crop from

pdEndFrequency - double Frequency to crop the sample to

Returns:

boolean true - cropped, false - not

Throws:

PreprocessingException

getSample

public final Sample getSample()

Returns enclosed sample.

Returns:

Sample object

dump

public void dump()
          throws java.io.IOException

Not Implemented

Specified by:

dump in interface StorageManager

Throws:

IOException

restore

public void restore()
             throws java.io.IOException

Not Implemented

Specified by:

restore in interface StorageManager

Throws:

IOException