Class ZoomTiledSpectrograms

Inheritance

Object

ZoomTiledSpectrograms

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: AudioAnalysisTools.LongDurationSpectrograms.Zooming

Assembly: AudioAnalysisTools.dll

Syntax

public static class ZoomTiledSpectrograms

Methods

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CombineFrameDataWithIndexData(Double[,], Double[,], Double, Double)

THis method is a way of getting the acoustic index data at 0.2 second resolution to have some influence on the frame spectrograms at 0.02s resolution. We cannot assume that the two matrices will have the same number of columns i.e. same temporal duration. The frame data has been padded to one minute duration. But the last index matrix will probably NOT be the full one minute duration. Therefore assume that indexData matrix will be shorter and take its column count.

Declaration

public static void CombineFrameDataWithIndexData(double[, ] frameData, double[, ] indexData, double frameWt, double indexWt)

Parameters

Type	Name	Description
Double[,]	frameData
Double[,]	indexData
Double	frameWt
Double	indexWt

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DrawFrameSpectrogramAtScale(LdSpectrogramConfig, SpectrogramZoomingConfig, TimeSpan, TimeSpan, Double[,], IndexGenerationData, ImageChrome)

Declaration

public static Image<Rgb24> DrawFrameSpectrogramAtScale(LdSpectrogramConfig config, SpectrogramZoomingConfig zoomingConfig, TimeSpan startTimeOfData, TimeSpan frameScale, double[, ] frameData, IndexGenerationData indexGeneration, ImageChrome chromeOption)

Parameters

Type	Name	Description
LdSpectrogramConfig	config
SpectrogramZoomingConfig	zoomingConfig
TimeSpan	startTimeOfData
TimeSpan	frameScale
Double[,]	frameData
IndexGenerationData	indexGeneration
ImageChrome	chromeOption

Returns

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

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DrawOneScaledIndexSpectrogramTile(LdSpectrogramConfig, IndexGenerationData, Dictionary<String, IndexProperties>, TimeSpan, TimeSpan, TimeSpan, Int32, Dictionary<String, Double[,]>, String, ImageChrome)

Declaration

public static Image<Rgb24> DrawOneScaledIndexSpectrogramTile(LdSpectrogramConfig config, IndexGenerationData indexGenerationData, Dictionary<string, IndexProperties> indexProperties, TimeSpan startTime, TimeSpan dataScale, TimeSpan imageScale, int superTileImageWidth, Dictionary<string, double[, ]> spectra, string basename, ImageChrome chromeOption)

Parameters

Type	Name	Description
LdSpectrogramConfig	config
IndexGenerationData	indexGenerationData
Dictionary<String, IndexProperties>	indexProperties
TimeSpan	startTime
TimeSpan	dataScale
TimeSpan	imageScale
Int32	superTileImageWidth
Dictionary<String, Double[,]>	spectra
String	basename
ImageChrome	chromeOption

Returns

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

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DrawSuperTilesAtScaleFromIndexSpectrograms(LdSpectrogramConfig, Dictionary<String, IndexProperties>, SpectrogramZoomingConfig, TimeSpan, Dictionary<String, Double[,]>, IndexGenerationData, String, ImageChrome, TimeSpan)

Draws FC index spectrograms for an entire row.

Declaration

public static TimeOffsetSingleLayerSuperTile[] DrawSuperTilesAtScaleFromIndexSpectrograms(LdSpectrogramConfig analysisConfig, Dictionary<string, IndexProperties> indexProperties, SpectrogramZoomingConfig zoomingConfig, TimeSpan imageScale, Dictionary<string, double[, ]> spectra, IndexGenerationData indexGeneration, string basename, ImageChrome chromeOption, TimeSpan alignmentPadding)

Parameters

Type	Name	Description
LdSpectrogramConfig	analysisConfig
Dictionary<String, IndexProperties>	indexProperties
SpectrogramZoomingConfig	zoomingConfig
TimeSpan	imageScale
Dictionary<String, Double[,]>	spectra
IndexGenerationData	indexGeneration
String	basename
ImageChrome	chromeOption
TimeSpan	alignmentPadding

Returns

Type	Description
TimeOffsetSingleLayerSuperTile[]

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DrawSuperTilesFromSingleFrameSpectrogram(DirectoryInfo, LdSpectrogramConfig, Dictionary<String, IndexProperties>, SpectrogramZoomingConfig, Int32, Double[], String, IndexGenerationData, ImageChrome, TimeSpan)

Assume that we are processing data for one minute only. From this one minute of data, we produce images at three scales. A one minute recording framed at 20ms should yield 3000 frames. But to achieve this where sr= 22050 and frameSize=512, we need an overlap of 71 samples. Consequently only 2999 frames returned per minute. Therefore have to pad end to get 3000 frames.

Declaration

public static TimeOffsetSingleLayerSuperTile[] DrawSuperTilesFromSingleFrameSpectrogram(DirectoryInfo dataDir, LdSpectrogramConfig analysisConfig, Dictionary<string, IndexProperties> indexProperties, SpectrogramZoomingConfig zoomingConfig, int minute, double[] imageScales, string basename, IndexGenerationData indexGeneration, ImageChrome chromeOption, TimeSpan alignmentPadding)

Parameters

Type	Name	Description
DirectoryInfo	dataDir
LdSpectrogramConfig	analysisConfig
Dictionary<String, IndexProperties>	indexProperties
SpectrogramZoomingConfig	zoomingConfig
Int32	minute
Double[]	imageScales
String	basename
IndexGenerationData	indexGeneration
ImageChrome	chromeOption
TimeSpan	alignmentPadding

Returns

Type	Description
TimeOffsetSingleLayerSuperTile[]

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DrawTiles(AnalysisIoInputDirectory, ZoomParameters, String)

THIS IS ENTRY METHOD FOR TILING SPECTROGRAMS.

Declaration

public static void DrawTiles(AnalysisIoInputDirectory io, ZoomParameters common, string analysisTag)

Parameters

Type	Name	Description
AnalysisIoInputDirectory	io
ZoomParameters	common
String	analysisTag

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GetPreviousTileBoundary(Int32, Double, DateTimeOffset)

Declaration

public static DateTimeOffset GetPreviousTileBoundary(int tileWidth, double scale, DateTimeOffset recordingStartDate)

Parameters

Type	Name	Description
Int32	tileWidth
Double	scale
DateTimeOffset	recordingStartDate

Returns

Type	Description
DateTimeOffset

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PadEndOfListOfFrames(List<Double[]>, Int32)

THis method pads the end of a list of frames read from a csv file. The frame count will be one less than expected for the recording segment because of frame overlap Therefore pad the end of the list of frames with the last frame.

Declaration

public static void PadEndOfListOfFrames(List<double[]> frameList, int expectedFrameCount)

Parameters

Type	Name	Description
List<Double[]>	frameList
Int32	expectedFrameCount

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TrimEndOfListOfFrames(List<Double[]>, Int32)

THis method trims the end of a list of frames read from a csv file. Sometimes inaccuracies in cutting audio produced frame counts that are too long. Therefore too many columns are rendered. Simply remove the end frames and issue a warning. TODO: a better solution would be to interpolate the extra frames... but too hard at the moment.

Declaration

public static void TrimEndOfListOfFrames(List<double[]> frameList, int expectedFrameCount)

Parameters

Type	Name	Description
List<Double[]>	frameList
Int32	expectedFrameCount