jAudioFeatureExtractor.AudioFeatures
クラス Moments
java.lang.Object
jAudioFeatureExtractor.AudioFeatures.FeatureExtractor
jAudioFeatureExtractor.AudioFeatures.Moments
public class Moments
- extends FeatureExtractor
Class that calculates the first 5 stastical method of moments (Fujinaga
1997). Very similar to Area Method of Moments feature, but does not have the
large offset - this feature starts producing results on the first window.
Fujinaga, I. Adaptive Optical Music Recognition. PhD thesis, McGill
University, 1997.
- 作成者:
- Daniel McEnnis
コンストラクタの概要 |
Moments()
Base constructor that defines definition, dependencies, and offsets. |
メソッドの概要 |
java.lang.Object |
clone()
Create an identical copy of this feature. |
double[] |
extractFeature(double[] samples,
double sampling_rate,
double[][] other_feature_values)
Calculates method of moments on the magnitude spectrum. |
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 |
Moments
public Moments()
- Base constructor that defines definition, dependencies, and offsets.
extractFeature
public double[] extractFeature(double[] samples,
double sampling_rate,
double[][] other_feature_values)
throws java.lang.Exception
- Calculates method of moments on the magnitude spectrum.
- 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.
clone
public java.lang.Object clone()
- Create an identical copy of this feature. This permits FeatureExtractor
to use the prototype pattern to create new composite features using
metafeatures.
- 定義:
- クラス
FeatureExtractor
内の clone