org.gcube.dataanalysis.ecoengine.signals

Class SignalProcessing

java.lang.Object

org.gcube.dataanalysis.ecoengine.signals.SignalProcessing

public class SignalProcessing
extends Object

Constructor Summary

Constructors

Constructor and Description
SignalProcessing()

Method Summary

Modifier and Type	Method and Description
static double[][]	applyFilterBank(double[][] feature, int numCepstra, int numMelFilters, int samplingRate, int frameLength, float minCutFequency, float maxCutFrequency)
static double[][]	calculateSumSpectrum(List<double[]> signals, int windowShiftSamples, int frameLength, int samplingRate)
static double[][]	concatenateSpectra(List<double[][]> spectra)
static void	displaySignalsWithTime(List<double[]> signals, Date[] dates, List<String> names, String format)
static void	displaySignalWithGenericTime(double[] signal, float t0, float timeshift, String name)
static void	displaySignalWithTime(double[] signal, Date[] dates, String name, String format)
static double[]	downSample(double[] signal, int numElements, AlgorithmConfiguration config)
static double[][]	extractSumSpectrum(String file, int windowShiftSamples, int frameLength, int samplingRate)
static double[]	fillSignal(double[] signal)
static Date[]	fillTimeLine(double[] timemilliseconds, double samplingRate, AlgorithmConfiguration config)
static double[]	fillTimeSeries(double[] values, double[] timeseconds, double samplingRate, AlgorithmConfiguration config)
static void	main(String[] args)
static double[][]	multiSignalAnalysis(List<double[]> signals, int samplingRate, int windowshift, int frameslength, boolean display)
static double[]	readSignalFromCSVLine(String line, String delimiter)
static List<double[]>	readSignalsFromCSV(String file, String delimiter)
static Image	renderSignalSpectrogram(double[] signal, double[] timeline, int samplingRate, int frameslength, int windowshift)
static Image	renderSignalSpectrogram2(double[][] spectrogram)
static Image	renderSignalsWithTime(List<double[]> signals, Date[] dates, List<String> names, String format)
static Image	renderSignalWithGenericTime(double[] signal, double[] timeline, String name)
static Image	renderSignalWithGenericTime(double[] signal, float t0, float timeshift, String name)
static Image	renderSignalWithTime(double[] signal, Date[] dates, String name, String format)
static double[][]	sumSpectra(List<double[][]> spectra)
static double[][]	takeCentralSpectrum(double[][] spectrum, float numOfCentralSeconds, float windowShiftTime, int sampleRate)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SignalProcessing

public SignalProcessing()

Method Detail

applyFilterBank

public static double[][] applyFilterBank(double[][] feature,
                                         int numCepstra,
                                         int numMelFilters,
                                         int samplingRate,
                                         int frameLength,
                                         float minCutFequency,
                                         float maxCutFrequency)
                                  throws Exception

Throws:

Exception

calculateSumSpectrum

public static double[][] calculateSumSpectrum(List<double[]> signals,
                                              int windowShiftSamples,
                                              int frameLength,
                                              int samplingRate)
                                       throws Exception

Throws:

Exception

concatenateSpectra

public static double[][] concatenateSpectra(List<double[][]> spectra)

displaySignalWithGenericTime

public static void displaySignalWithGenericTime(double[] signal,
                                                float t0,
                                                float timeshift,
                                                String name)

renderSignalWithGenericTime

public static Image renderSignalWithGenericTime(double[] signal,
                                                float t0,
                                                float timeshift,
                                                String name)

renderSignalWithGenericTime

public static Image renderSignalWithGenericTime(double[] signal,
                                                double[] timeline,
                                                String name)

renderSignalWithTime

public static Image renderSignalWithTime(double[] signal,
                                         Date[] dates,
                                         String name,
                                         String format)

renderSignalsWithTime

public static Image renderSignalsWithTime(List<double[]> signals,
                                          Date[] dates,
                                          List<String> names,
                                          String format)

renderSignalSpectrogram

public static Image renderSignalSpectrogram(double[] signal,
                                            double[] timeline,
                                            int samplingRate,
                                            int frameslength,
                                            int windowshift)

renderSignalSpectrogram2

public static Image renderSignalSpectrogram2(double[][] spectrogram)

displaySignalWithTime

public static void displaySignalWithTime(double[] signal,
                                         Date[] dates,
                                         String name,
                                         String format)

displaySignalsWithTime

public static void displaySignalsWithTime(List<double[]> signals,
                                          Date[] dates,
                                          List<String> names,
                                          String format)

downSample

public static double[] downSample(double[] signal,
                                  int numElements,
                                  AlgorithmConfiguration config)
                           throws Exception

Throws:

Exception

extractSumSpectrum

public static double[][] extractSumSpectrum(String file,
                                            int windowShiftSamples,
                                            int frameLength,
                                            int samplingRate)
                                     throws Exception

Throws:

Exception

fillTimeLine

public static Date[] fillTimeLine(double[] timemilliseconds,
                                  double samplingRate,
                                  AlgorithmConfiguration config)
                           throws Exception

Throws:

Exception

fillSignal

public static double[] fillSignal(double[] signal)
                           throws Exception

Throws:

Exception

fillTimeSeries

public static double[] fillTimeSeries(double[] values,
                                      double[] timeseconds,
                                      double samplingRate,
                                      AlgorithmConfiguration config)
                               throws Exception

Throws:

Exception

multiSignalAnalysis

public static double[][] multiSignalAnalysis(List<double[]> signals,
                                             int samplingRate,
                                             int windowshift,
                                             int frameslength,
                                             boolean display)
                                      throws Exception

Throws:

Exception

readSignalsFromCSV

public static List<double[]> readSignalsFromCSV(String file,
                                                String delimiter)
                                         throws Exception

Throws:

Exception

readSignalFromCSVLine

public static double[] readSignalFromCSVLine(String line,
                                             String delimiter)
                                      throws Exception

Throws:

Exception

sumSpectra

public static double[][] sumSpectra(List<double[][]> spectra)

takeCentralSpectrum

public static double[][] takeCentralSpectrum(double[][] spectrum,
                                             float numOfCentralSeconds,
                                             float windowShiftTime,
                                             int sampleRate)

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception