org.openimaj.audio.features

Class SpectralFlux

java.lang.Object

org.openimaj.audio.Audio

org.openimaj.audio.AudioStream

org.openimaj.audio.processor.AudioProcessor

org.openimaj.audio.features.JAudioFeatureExtractor

org.openimaj.audio.features.SpectralFlux

All Implemented Interfaces:

Iterable<SampleChunk>, FeatureExtractor<DoubleFV,SampleChunk>

public class SpectralFlux
extends JAudioFeatureExtractor

Wrapper around the jAudio implementation of Spectral flux.

Version:

$Author$, $Revision$, $Date$

Author:

David Dupplaw (dpd@ecs.soton.ac.uk)

Created:

23 May 2013

Field Summary

Fields inherited from class org.openimaj.audio.features.JAudioFeatureExtractor

featureExtractor

Fields inherited from class org.openimaj.audio.Audio

format

Constructor Summary

Constructors

Constructor and Description
SpectralFlux() Default constructor
SpectralFlux(AudioStream as) Constructor that's chainable.

Method Summary

Modifier and Type	Method and Description
double[][]	getExtraInputs(double[] samples, double sampleRate) Returns the extra inputs required by a specific feature extractor
int	getNumberToStore() Get the number of spectral flux values to store in the feature
void	setNumberToStore(int numberToStore) Set the number of spectral flux values to store in the feature

Methods inherited from class org.openimaj.audio.features.JAudioFeatureExtractor

extractFeature, getLastCalculatedFeature, process, process, process, process, setLastCalculatedFeature

Methods inherited from class org.openimaj.audio.processor.AudioProcessor

getLength, getUnderlyingStream, nextSampleChunk, process, processingComplete, reset, setUnderlyingStream

Methods inherited from class org.openimaj.audio.AudioStream

iterator, seek

Methods inherited from class org.openimaj.audio.Audio

getFormat, setFormat

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

SpectralFlux

public SpectralFlux()

Default constructor

SpectralFlux

public SpectralFlux(AudioStream as)

Constructor that's chainable.

Parameters:

as - The stream to chain to

Method Detail

getExtraInputs

public double[][] getExtraInputs(double[] samples,
                                 double sampleRate)

Returns the extra inputs required by a specific feature extractor

Specified by:

getExtraInputs in class JAudioFeatureExtractor

Parameters:

samples - The samples for a single channel

sampleRate - The sample rate of the data

Returns:

The extra input

See Also:

JAudioFeatureExtractor.getExtraInputs(double[], double)

getNumberToStore

public int getNumberToStore()

Get the number of spectral flux values to store in the feature

Returns:

the numberToStore The number to store

setNumberToStore

public void setNumberToStore(int numberToStore)

Set the number of spectral flux values to store in the feature

Parameters:

numberToStore - The number of values to store