jAudioFeatureExtractor.AudioFeatures
Class HarmonicSpectralSmoothness
java.lang.Object
jAudioFeatureExtractor.AudioFeatures.FeatureExtractor
jAudioFeatureExtractor.AudioFeatures.HarmonicSpectralSmoothness
public class HarmonicSpectralSmoothness
- extends FeatureExtractor
A peak based calculation of smoothness. Caculated by evaluting the log of a
partial minus the average of the log of the surrounding partials. Is based
upon Stephan McAdams Spectral Smoothness in (McAdams 1999).
McAdams, S. 1999. Perspectives on the contribution of timbre to musical
structure. Computer Music Journal. 23(3):85-102.
- Author:
- Daniel McEnnis
Method Summary |
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 smoothness from the window. |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
HarmonicSpectralSmoothness
public HarmonicSpectralSmoothness()
- Basic constructor that sets dependencies, definition, and offsets.
extractFeature
public double[] extractFeature(double[] samples,
double sampling_rate,
double[][] other_feature_values)
- Extract the peak based spectral smoothness from the window.
- Specified by:
extractFeature
in class FeatureExtractor
- Parameters:
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.
- Returns:
- The extracted feature value(s).
- Throws:
java.lang.Exception
- Throws an informative exception if the feature cannot be
calculated.- See Also:
FeatureExtractor.extractFeature(double[],
double, double[][])
clone
public java.lang.Object clone()
- Proviede a complete copy of this feature. Used to implement the prottype
pattern
- Specified by:
clone
in class FeatureExtractor