org.gcube.dataanalysis.ecoengine.signals

Class PeriodicityDetector

java.lang.Object

org.gcube.dataanalysis.ecoengine.signals.PeriodicityDetector

public class PeriodicityDetector
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
int	currentSamplingRate
double[][]	currentspectrum
int	currentWindowAnalysisSamples
int	currentWindowShiftSamples
double	endPeriodSampleIndex
double	endPeriodTime
double	lowermeanF
double	lowermeanPeriod
double	maxFrequency
double	meanF
double	meanPeriod
double	minFrequency
double	periodicityStrength
double	startPeriodSampleIndex
double	startPeriodTime
double	uppermeanF
double	uppermeanPeriod

Constructor Summary

Constructors

Constructor and Description
PeriodicityDetector()

Method Summary

Methods

Modifier and Type	Method and Description
void	adjustParameters(double[] signal, int samplingRate, float minPossibleFreq, float maxPossibleFreq, float wantedFreqError, int FFTnsamples)
void	demo()
LinkedHashMap<String,String>	detectAllFrequencies(double[] signal, int samplingRate, float minPossibleFreq, float maxPossibleFreq, float wantedFreqError, int FFTnsamples, float sensitivity, boolean display)
double	detectFrequency(double[] signal)
double	detectFrequency(double[] signal, boolean display)
double	detectFrequency(double[] signal, int samplingRate, float minPossibleFreq, float maxPossibleFreq, float wantedFreqError, int FFTnsamples, boolean display)
String	getPeriodicityStregthInterpretation()
String	getPowerSpectrumStregthInterpretation(double powerStrength)
static void	main(String[] args)
double[]	produceNoisySignal(float signalLengthTimeinSec, int samplingRate, float frequency, float SNratio)

Methods inherited from class java.lang.Object

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

Field Detail

currentSamplingRate

public int currentSamplingRate

currentWindowShiftSamples

public int currentWindowShiftSamples

currentWindowAnalysisSamples

public int currentWindowAnalysisSamples

currentspectrum

public double[][] currentspectrum

meanF

public double meanF

lowermeanF

public double lowermeanF

uppermeanF

public double uppermeanF

meanPeriod

public double meanPeriod

lowermeanPeriod

public double lowermeanPeriod

uppermeanPeriod

public double uppermeanPeriod

startPeriodTime

public double startPeriodTime

endPeriodTime

public double endPeriodTime

startPeriodSampleIndex

public double startPeriodSampleIndex

endPeriodSampleIndex

public double endPeriodSampleIndex

periodicityStrength

public double periodicityStrength

minFrequency

public double minFrequency

maxFrequency

public double maxFrequency

Constructor Detail

PeriodicityDetector

public PeriodicityDetector()

Method Detail

getPeriodicityStregthInterpretation

public String getPeriodicityStregthInterpretation()

getPowerSpectrumStregthInterpretation

public String getPowerSpectrumStregthInterpretation(double powerStrength)

demo

public void demo()
          throws Exception

Throws:

Exception

main

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

Throws:

Exception

produceNoisySignal

public double[] produceNoisySignal(float signalLengthTimeinSec,
                          int samplingRate,
                          float frequency,
                          float SNratio)

detectFrequency

public double detectFrequency(double[] signal,
                     boolean display)
                       throws Exception

Throws:

Exception

detectFrequency

public double detectFrequency(double[] signal)
                       throws Exception

Throws:

Exception

detectFrequency

public double detectFrequency(double[] signal,
                     int samplingRate,
                     float minPossibleFreq,
                     float maxPossibleFreq,
                     float wantedFreqError,
                     int FFTnsamples,
                     boolean display)
                       throws Exception

Throws:

Exception

adjustParameters

public void adjustParameters(double[] signal,
                    int samplingRate,
                    float minPossibleFreq,
                    float maxPossibleFreq,
                    float wantedFreqError,
                    int FFTnsamples)

detectAllFrequencies

public LinkedHashMap<String,String> detectAllFrequencies(double[] signal,
                                                int samplingRate,
                                                float minPossibleFreq,
                                                float maxPossibleFreq,
                                                float wantedFreqError,
                                                int FFTnsamples,
                                                float sensitivity,
                                                boolean display)
                                                  throws Exception

Throws:

Exception