Package com.tagtraum.audiokern.lowlevel

Class SpectralCentroidMean

java.lang.Object

com.tagtraum.audiokern.lowlevel.LowLevelFeatureAnalyzer<Float>

com.tagtraum.audiokern.lowlevel.SpectralCentroidMean

All Implemented Interfaces:

SongPropertyAnalyzer<Float>

public class SpectralCentroidMean
extends LowLevelFeatureAnalyzer<Float>

SpectralCentroidMean.

Author:

Hendrik Schreiber

Constructor Summary

Constructors

Constructor	Description
SpectralCentroidMean()

Method Summary

Modifier and Type	Method	Description
SignalProcessor<AudioBuffer,Float>	createPipeline()	Creates a pipeline that produces a result with the property name in question as id.
String	getName()	Name of this analyzer in the format NAME 0.0.0, where NAME is the name and 0.0.0 its version.
String	getPropertyName()	Name of the property that shall be set on an AudioSong object.

Methods inherited from class com.tagtraum.audiokern.lowlevel.LowLevelFeatureAnalyzer

getFirstXSecondsOfAudio, getRequiredClip, setFirstXSecondsOfAudio

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tagtraum.audiokern.SongPropertyAnalyzer

getId

Constructor Detail

SpectralCentroidMean

public SpectralCentroidMean()

Method Detail

createPipeline

public SignalProcessor<AudioBuffer,Float> createPipeline()

Description copied from interface: SongPropertyAnalyzer

Creates a pipeline that produces a result with the property name in question as id. E.g. to calculate the key property of an AudioSong, this method should create a pipeline that produces a Key object under the id key.

This method must return a new pipeline every time it is called. You must not cache a once created pipeline and return it again and again.

When this instance is used, the produced pipeline is repeatedly called with audio data. Specifically, the SignalProcessor.process(Object) method is called with AudioBuffers for the desired clip (see SongPropertyAnalyzer.getRequiredClip(AudioFileFormat)). The audio format is typically 44.1kHz, stereo, signed 16 bit.

Once all buffers are processed, the system calls SignalProcessor.flush() and then expects SignalProcessor.getOutput() to return the computed value.

Returns:

analysis pipeline

See Also:

SignalProcessor.getId(), SignalProcessor.flush(), SignalProcessor.process(Object), SignalProcessor.getOutput()

getName

public String getName()

Description copied from interface: SongPropertyAnalyzer

Name of this analyzer in the format NAME 0.0.0, where NAME is the name and 0.0.0 its version.

Returns:

name

getPropertyName

public String getPropertyName()

Description copied from interface: SongPropertyAnalyzer

Name of the property that shall be set on an AudioSong object. This could be e.g. key, comments, grouping, ...

Returns:

property name