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java.lang.ObjectjAudioFeatureExtractor.AudioFeatures.FeatureExtractor
jAudioFeatureExtractor.AudioFeatures.LPC
public class LPC
Calculates linear predictive coeffecients of an signal. Also includes a warping factor lambda that is disabled by default. Based upon code published at www.musicdsp.org.
2005. Music-dsp source code archive [online]. [cited 17 May 2005]. Available from the World Wide Web: (http://musicdsp.org/archive.php?classid=2#137)
Field Summary |
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Fields inherited from class jAudioFeatureExtractor.AudioFeatures.FeatureExtractor |
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definition, dependencies, offsets, parent |
Constructor Summary | |
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LPC()
Basic constructor for LPC that sets definition, dependencies, and offsets field. |
Method Summary | |
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java.lang.Object |
clone()
Provide a complete copy of this feature. |
double[] |
extractFeature(double[] samples,
double sampling_rate,
double[][] other_feature_values)
Code taken from www.musicdsp.org. |
java.lang.String |
getElement(int index)
Function permitting an unintelligent outside function (ie. |
void |
setElement(int index,
java.lang.String value)
Function permitting an unintelligent outside function (ie. |
void |
setLambda(double l)
Provides a mechanism for editing the 'frequency warping' factor in the LPC code from musicdsp. |
void |
setNumDimensions(int n)
Edits the number of LPC coeffecients to be calculated. |
Methods inherited from class jAudioFeatureExtractor.AudioFeatures.FeatureExtractor |
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getDepenedencies, getDepenedencyOffsets, getFeatureDefinition, setParent, setWindow |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public LPC()
Method Detail |
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public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) throws java.lang.Exception
mail.mutagene.net.2005. Music dsp source archive [online] [cited May 10, 2005] Available on world wide web (http://musicdsp.org/archive.php?classid=2#137)
extractFeature
in class FeatureExtractor
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.FeatureExtractor.extractFeature(double[],
double, double[][])
public java.lang.Object clone()
clone
in class FeatureExtractor
public java.lang.String getElement(int index) throws java.lang.Exception
getElement
in class FeatureExtractor
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
setElement
in class FeatureExtractor
index
- attribute to be setvalue
- new value of the attribute
java.lang.Exception
public void setNumDimensions(int n) throws java.lang.Exception
n
- number of coeffecients to be calculated.
java.lang.Exception
- thrown if less than 1 feature is to be calculated.public void setLambda(double l) throws java.lang.Exception
l
- new lmbda value
java.lang.Exception
- throws if the lambda value is not a real number.
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