jAudioFeatureExtractor.AudioFeatures
クラス HarmonicSpectralFlux

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

public class HarmonicSpectralFlux
extends FeatureExtractor

A variation on spectral flux that is based upon peaks instead of bins. Given two sets of peaks, calculate the correlation between adjacent peaks. This should use proper peak tracking, but for now tracks peaks by matching peaks from the bottom up. Unmatched peaks are discarded. This feature 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.

作成者:
Daniel McEnnis

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
HarmonicSpectralFlux()
          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 flux 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

HarmonicSpectralFlux

public HarmonicSpectralFlux()
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 flux 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