|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.ObjectjAudioFeatureExtractor.AudioFeatures.FeatureExtractor
jAudioFeatureExtractor.AudioFeatures.BeatHistogramLabels
public class BeatHistogramLabels
A "feature extractor" that calculates the bin labels, in beats per minute, of a beat histogram.
Although this is not a useful feature for the purposes of classifying, it can be useful for calculating other features.
IMPORTANT:
The window size of 256 RMS windows used in the BeatHistogram is hard-coded into this class. Any changes to the value in that class must be made here as well.Daniel McEnnis 05-08-05 added setBinNumber, getElement, setElement, and clone
Field Summary |
---|
Fields inherited from class jAudioFeatureExtractor.AudioFeatures.FeatureExtractor |
---|
definition, dependencies, offsets, parent |
Constructor Summary | |
---|---|
BeatHistogramLabels()
Basic constructor that sets the definition and dependencies (and their offsets) of this feature. |
Method Summary | |
---|---|
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 |
setBinNumber(int n)
Sets the bin Number - changes should be linked to beatHistogramType |
void |
setElement(int index,
java.lang.String value)
Function permitting an unintelligent outside function (ie. |
Methods inherited from class jAudioFeatureExtractor.AudioFeatures.FeatureExtractor |
---|
getDepenedencies, getDepenedencyOffsets, getFeatureDefinition, setParent, setWindow |
Methods inherited from class java.lang.Object |
---|
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public BeatHistogramLabels()
Method Detail |
---|
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 and other_feature_values parameters are ignored.
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.public void setBinNumber(int n) throws java.lang.Exception
n
- new number of beat bins
java.lang.Exception
- thrown if new number of bins is les than 2public 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 java.lang.Object clone()
clone
in class FeatureExtractor
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |