Class FindMatchingEvents

Inheritance
Object
FindMatchingEvents
Inherited Members
Namespace: AudioAnalysisTools
Assembly: AudioAnalysisTools.dll
Syntax
public class FindMatchingEvents

Methods

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CountPositives(Double[,])

Declaration
public static int CountPositives(double[, ] m)
Parameters
Type Name Description
Double[,] m
Returns
Type Description
Int32
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Execute_Bi_or_TrinaryMatch(Double[,], SpectrogramStandard, List<AcousticEvent>, Int32, Int32, Double)

Use this method to find match in sonogram to a symbolic definition of a bird call. That is, the template should be matrix of binary or trinary values.

Declaration
public static Tuple<double[]> Execute_Bi_or_TrinaryMatch(double[, ] template, SpectrogramStandard sonogram, List<AcousticEvent> segments, int minHz, int maxHz, double dBThreshold)
Parameters
Type Name Description
Double[,] template
SpectrogramStandard sonogram
List<AcousticEvent> segments
Int32 minHz
Int32 maxHz
Double dBThreshold

Not used in calculation. Only used to speed up loop over the spectrogram.
Returns
Type Description
Tuple<Double[]>
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Execute_MFCC_XCOR(Double[,], Double, SpectrogramStandard, List<AcousticEvent>, Int32, Int32, Double)

Declaration
public static Tuple<double[]> Execute_MFCC_XCOR(double[, ] target, double dynamicRange, SpectrogramStandard sonogram, List<AcousticEvent> segments, int minHz, int maxHz, double minDuration)
Parameters
Type Name Description
Double[,] target
Double dynamicRange
SpectrogramStandard sonogram
List<AcousticEvent> segments
Int32 minHz
Int32 maxHz
Double minDuration
Returns
Type Description
Tuple<Double[]>
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Execute_One_Spr_Match(Char[,], Double[,], Double)

Declaration
public static Tuple<double> Execute_One_Spr_Match(char[, ] template, double[, ] dataMatrix, double dBThreshold)
Parameters
Type Name Description
Char[,] template
Double[,] dataMatrix
Double dBThreshold
Returns
Type Description
Tuple<Double>
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Execute_SobelEdges(Double[,], Double, SpectrogramStandard, List<AcousticEvent>, Int32, Int32, Double)

Declaration
public static Tuple<double[]> Execute_SobelEdges(double[, ] target, double dynamicRange, SpectrogramStandard sonogram, List<AcousticEvent> segments, int minHz, int maxHz, double minDuration)
Parameters
Type Name Description
Double[,] target
Double dynamicRange
SpectrogramStandard sonogram
List<AcousticEvent> segments
Int32 minHz
Int32 maxHz
Double minDuration
Returns
Type Description
Tuple<Double[]>
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Execute_Spr_Match(Char[,], SpectrogramStandard, List<AcousticEvent>, Int32, Int32, Double)

Use this method to find match in sonogram to a symbolic definition of a bird call. That is, the template should be matrix of binary or trinary values.

Declaration
public static Tuple<double[]> Execute_Spr_Match(char[, ] template, SpectrogramStandard sonogram, List<AcousticEvent> segments, int minHz, int maxHz, double dBThreshold)
Parameters
Type Name Description
Char[,] template
SpectrogramStandard sonogram
List<AcousticEvent> segments
Int32 minHz
Int32 maxHz
Double dBThreshold
Returns
Type Description
Tuple<Double[]>
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Execute_StewartGage(Double[,], Double, SpectrogramStandard, List<AcousticEvent>, Int32, Int32, Double)

Use this method when want to match defined shape in target using cross-correlation. This was the method used by Stewart Gage. First set target and source to same dynamic range. Then NormaliseMatrixValues target and source to unit-length.

Declaration
public static Tuple<double[]> Execute_StewartGage(double[, ] target, double dynamicRange, SpectrogramStandard sonogram, List<AcousticEvent> segments, int minHz, int maxHz, double minDuration)
Parameters
Type Name Description
Double[,] target
Double dynamicRange
SpectrogramStandard sonogram
List<AcousticEvent> segments
Int32 minHz
Int32 maxHz
Double minDuration
Returns
Type Description
Tuple<Double[]>
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NormaliseBiTrinaryMatrix(Double[,])

Normalises a binary matrix of -1,+1 or trinary matrix of -1,0,+1 so that the sum of +1 cells = sum of -1 cells. Change the -1 cells by a ratio. The purpose is to use the normalised matrix for pattern matching such that the matrix returns a zero value for uniform background noise.

Declaration
public static Tuple<double[, ], int, int> NormaliseBiTrinaryMatrix(double[, ] target)
Parameters
Type Name Description
Double[,] target
Returns
Type Description
Tuple<Double[,], Int32, Int32>
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ReadImage2BinaryMatrixDouble(String)

Declaration
public static double[, ] ReadImage2BinaryMatrixDouble(string fileName)
Parameters
Type Name Description
String fileName
Returns
Type Description
Double[,]
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ReadImage2TrinaryMatrix(String)

Declaration
public static double[, ] ReadImage2TrinaryMatrix(string fileName)
Parameters
Type Name Description
String fileName
Returns
Type Description
Double[,]
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ReadTextFile2CharMatrix(String)

Declaration
public static char[, ] ReadTextFile2CharMatrix(string fileName)
Parameters
Type Name Description
String fileName
Returns
Type Description
Char[,]
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WriteTemplate2Console(Double[,])

Declaration
public static void WriteTemplate2Console(double[, ] template)
Parameters
Type Name Description
Double[,] template

Extension Methods