Class LdSpectrogram3D

This class generates false-colour spectrograms of long duration audio recordings. Important properties are:

the colour map which maps three acoutic indices to RGB.
The scale of the x and y axes which are dtermined by the sample rate, frame size etc. In order to create false colour spectrograms, copy the method public static void DrawFalseColourSpectrograms(LDSpectrogramConfig configuration) All the arguments can be passed through a config file. Create the config file throu an instance of the class LDSpectrogramConfig and then call config.WritConfigToYAML(FileInfo path). Then pass that path to the above static method.

Inheritance

Object

LdSpectrogram3D

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: AudioAnalysisTools.LongDurationSpectrograms

Assembly: AudioAnalysisTools.dll

Syntax

public static class LdSpectrogram3D

Fields

| Improve this Doc View Source

KeyDayOfYear

Declaration

public const string KeyDayOfYear = "DayOfYear"

Field Value

Type	Description
String

| Improve this Doc View Source

KeyFreqBin

Declaration

public const string KeyFreqBin = "FreqBin"

Field Value

Type	Description
String

| Improve this Doc View Source

KeyMinOfDay

Declaration

public const string KeyMinOfDay = "MinOfDay"

Field Value

Type	Description
String

| Improve this Doc View Source

KeyYear

Declaration

public const string KeyYear = "Year"

Field Value

Type	Description
String

| Improve this Doc View Source

TotalDaysInYear

Declaration

public const int TotalDaysInYear = 365

Field Value

Type	Description
Int32

| Improve this Doc View Source

TotalMinutesInDay

Declaration

public const int TotalMinutesInDay = 1440

Field Value

Type	Description
Int32

Methods

| Improve this Doc View Source

AddDaylightMinutesToImage(Image<Rgb24>, FileInfo, Int32)

Declaration

public static void AddDaylightMinutesToImage(Image<Rgb24> image, FileInfo sunriseSetData, int minuteOfDay)

Parameters

Type	Name	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	image
FileInfo	sunriseSetData
Int32	minuteOfDay

| Improve this Doc View Source

DrawFreqScale_vertical(Int32, Int32, Int32, Int32)

Declaration

public static Image<Rgb24> DrawFreqScale_vertical(int yoffset, int trackHeight, int herzValue, int nyquistFreq)

Parameters

Type	Name	Description
Int32	yoffset
Int32	trackHeight
Int32	herzValue
Int32	nyquistFreq

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

Frame3DSpectrogram(Image<Rgb24>, String, Int32, Int32, String, TimeSpan, Int32, Int32, FileInfo)

Declaration

public static Image<Rgb24> Frame3DSpectrogram(Image<Rgb24> image, string key, int value, int year, string colorMap, TimeSpan xInterval, int nyquistFreq, int unitValue, FileInfo sunriseSetData)

Parameters

Type	Name	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	image
String	key
Int32	value
Int32	year
String	colorMap
TimeSpan	xInterval
Int32	nyquistFreq
Int32	unitValue
FileInfo	sunriseSetData

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

FrameSliceOf3DSpectrogram_ConstantFreq(Image<Rgb24>, Image<Rgb24>, TimeSpan, Int32, FileInfo, Int32)

Declaration

public static Image<Rgb24> FrameSliceOf3DSpectrogram_ConstantFreq(Image<Rgb24> bmp1, Image<Rgb24> titleBar, TimeSpan xInterval, int herzValue, FileInfo sunriseSetData, int nyquistFreq)

Parameters

Type	Name	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	bmp1
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	titleBar
TimeSpan	xInterval
Int32	herzValue
FileInfo	sunriseSetData
Int32	nyquistFreq

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

FrameSliceOf3DSpectrogram_ConstantMin(Image<Rgb24>, Image<Rgb24>, Int32, Int32, FileInfo)

Declaration

public static Image<Rgb24> FrameSliceOf3DSpectrogram_ConstantMin(Image<Rgb24> bmp1, Image<Rgb24> titleBar, int nyquistFreq, int minuteOfDay, FileInfo sunriseSetData)

Parameters

Type	Name	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	bmp1
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	titleBar
Int32	nyquistFreq
Int32	minuteOfDay
FileInfo	sunriseSetData

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

FrameSliceOf3DSpectrogram_DayOfYear(Image<Rgb24>, Image<Rgb24>, Int32, Int32, TimeSpan, Int32, FileInfo, Int32)

Declaration

public static Image<Rgb24> FrameSliceOf3DSpectrogram_DayOfYear(Image<Rgb24> bmp1, Image<Rgb24> titleBar, int year, int dayOfYear, TimeSpan xInterval, int herzValue, FileInfo sunriseSetData, int nyquistFreq)

Parameters

Type	Name	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	bmp1
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>	titleBar
Int32	year
Int32	dayOfYear
TimeSpan	xInterval
Int32	herzValue
FileInfo	sunriseSetData
Int32	nyquistFreq

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

GetDataSlice(DirectoryInfo, String, Int32)

Declaration

public static List<string> GetDataSlice(DirectoryInfo dataTableDir, string key, int value)

Parameters

Type	Name	Description
DirectoryInfo	dataTableDir
String	key
Int32	value

Returns

Type	Description
List<String>

| Improve this Doc View Source

GetDaySlice(DirectoryInfo, Int32, Int32)

This method reads a single file containg a single day of index values. The method assumes that the file name has following structure: XXXXX_YYYYMMDD.SpectralIndices.PivotTable.csv.

Declaration

public static List<string> GetDaySlice(DirectoryInfo dataTableDir, int year, int dayOfYear)

Parameters

Type	Name	Description
DirectoryInfo	dataTableDir
Int32	year
Int32	dayOfYear

Returns

Type	Description
List<String>

| Improve this Doc View Source

GetImageSlice(String, List<String>, Int32, Int32, Int32, Int32, Int32, IndexProperties, IndexProperties, IndexProperties, Int32)

Declaration

public static Image<Rgb24> GetImageSlice(string key, List<string> data, int rowId, int colId, int redId, int grnId, int bluId, IndexProperties ipRed, IndexProperties ipGrn, IndexProperties ipBlu, int freqBinCount)

Parameters

Type	Name	Description
String	key
List<String>	data
Int32	rowId
Int32	colId
Int32	redId
Int32	grnId
Int32	bluId
IndexProperties	ipRed
IndexProperties	ipGrn
IndexProperties	ipBlu
Int32	freqBinCount

Returns

Type	Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>

| Improve this Doc View Source

Main(LdSpectrogram3D.Arguments)

This method used to construct slices out of implicit 3-D spectrograms. As of December 2014 it contains hard coded variables just to get it working.

Declaration

public static void Main(LdSpectrogram3D.Arguments arguments)

Parameters

Type	Name	Description
LdSpectrogram3D.Arguments	arguments

| Improve this Doc View Source

NormaliseSpectrogramMatrix(IndexProperties, Double[,], Double)

Declaration

public static double[, ] NormaliseSpectrogramMatrix(IndexProperties indexProperties, double[, ] matrix, double backgroundFilterCoeff)

Parameters

Type	Name	Description
IndexProperties	indexProperties
Double[,]	matrix
Double	backgroundFilterCoeff

Returns

Type	Description
Double[,]