jAudioFeatureExtractor.AudioFeatures
クラス HarmonicSpectralCentroid

java.lang.Object
  上位を拡張 jAudioFeatureExtractor.AudioFeatures.FeatureExtractor
      上位を拡張 jAudioFeatureExtractor.AudioFeatures.HarmonicSpectralCentroid

public class HarmonicSpectralCentroid
extends FeatureExtractor

A variation on spectral centroid that is based upon peaks instead of bins. Given a set of peaks, calculate the peak index that corresponds to 50% of the energy in the window. Is based upon Stephan McAdams Spectral Centroid in (McAdams 1999).

McAdams, S. 1999. Perspectives on the contribution of timbre to musical structure. Computer Music Journal. 23(3):85-102.


フィールドの概要
 
クラス jAudioFeatureExtractor.AudioFeatures.FeatureExtractor から継承されたフィールド
definition, dependencies, offsets, parent
 
コンストラクタの概要
HarmonicSpectralCentroid()
          Basic constructor that sets dependencies, definition, and offsets.
 
メソッドの概要
 java.lang.Object clone()
          Proviede a complete copy of this feature.
 double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values)
          Extract the peak based spectral centroid from the window.
 
クラス jAudioFeatureExtractor.AudioFeatures.FeatureExtractor から継承されたメソッド
getDepenedencies, getDepenedencyOffsets, getElement, getFeatureDefinition, setElement, setParent, setWindow
 
クラス java.lang.Object から継承されたメソッド
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

コンストラクタの詳細

HarmonicSpectralCentroid

public HarmonicSpectralCentroid()
Basic constructor that sets dependencies, definition, and offsets.

メソッドの詳細

extractFeature

public double[] extractFeature(double[] samples,
                               double sampling_rate,
                               double[][] other_feature_values)
Extract the peak based spectral centroid from the window.

定義:
クラス FeatureExtractor 内の extractFeature
パラメータ:
samples - The samples to extract the feature from.
sampling_rate - The sampling rate that the samples are encoded with.
other_feature_values - The values of other features that are needed to calculate this value. The order and offsets of these features must be the same as those returned by this class's getDependencies and getDependencyOffsets methods respectively. The first indice indicates the feature/window and the second indicates the value.
戻り値:
The extracted feature value(s).
例外:
java.lang.Exception - Throws an informative exception if the feature cannot be calculated.
関連項目:
FeatureExtractor.extractFeature(double[], double, double[][])

clone

public java.lang.Object clone()
Proviede a complete copy of this feature. Used to implement the prottype pattern

定義:
クラス FeatureExtractor 内の clone