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概要: 入れ子 | フィールド | コンストラクタ | メソッド | 詳細: フィールド | コンストラクタ | メソッド |
java.lang.ObjectjAudioFeatureExtractor.AudioFeatures.FeatureExtractor
jAudioFeatureExtractor.AudioFeatures.SpectralRolloffPoint
public class SpectralRolloffPoint
A feature extractor that extracts the Spectral Rolloff Point. This is a measure measure of the amount of the right-skewedness of the power spectrum.
The spectral rolloff point is the fraction of bins in the power spectrum at which 85% of the power is at lower frequencies.
No extracted feature values are stored in objects of this class.
フィールドの概要 | |
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protected double |
cutoff
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クラス jAudioFeatureExtractor.AudioFeatures.FeatureExtractor から継承されたフィールド |
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definition, dependencies, offsets, parent |
コンストラクタの概要 | |
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SpectralRolloffPoint()
Basic constructor that sets the definition and dependencies (and their offsets) of this feature. |
メソッドの概要 | |
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java.lang.Object |
clone()
Create an identical copy of this feature. |
double[] |
extractFeature(double[] samples,
double sampling_rate,
double[][] other_feature_values)
Extracts this feature from the given samples at the given sampling rate and given the other feature values. |
java.lang.String |
getElement(int index)
Function permitting an unintelligent outside function (ie. |
void |
setCutoff(double c)
Permits users to set the rpecise cutoff point. |
void |
setElement(int index,
java.lang.String value)
Function permitting an unintelligent outside function (ie. |
クラス jAudioFeatureExtractor.AudioFeatures.FeatureExtractor から継承されたメソッド |
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getDepenedencies, getDepenedencyOffsets, getFeatureDefinition, setParent, setWindow |
クラス java.lang.Object から継承されたメソッド |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
フィールドの詳細 |
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protected double cutoff
コンストラクタの詳細 |
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public SpectralRolloffPoint()
メソッドの詳細 |
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public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) throws java.lang.Exception
In the case of this feature, the sampling_rate parameter is ignored.
FeatureExtractor
内の extractFeature
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.
java.lang.Exception
- Throws an informative exception if the feature cannot be
calculated.public java.lang.Object clone()
FeatureExtractor
内の clone
public java.lang.String getElement(int index) throws java.lang.Exception
FeatureExtractor
内の getElement
index
- which of AreaMoment's attributes should be edited.
java.lang.Exception
public void setElement(int index, java.lang.String value) throws java.lang.Exception
FeatureExtractor
内の setElement
index
- attribute to be setvalue
- new value of the attribute
java.lang.Exception
public void setCutoff(double c) throws java.lang.Exception
c
- new cutoff point
java.lang.Exception
- thrown if c is not a real number strictly between 0 and 1.
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前のクラス 次のクラス | フレームあり フレームなし | ||||||||
概要: 入れ子 | フィールド | コンストラクタ | メソッド | 詳細: フィールド | コンストラクタ | メソッド |