SignalUtils Namespace

General purpose signal processing routines.

Name	Description
Classes	The following table lists classes in this documentation.
Functions	The following table lists functions in this documentation.
Structs, Records, Enums	The following table lists structs, records, enums in this documentation.
Types	The following table lists types in this documentation.
Constants	The following table lists constants in this documentation.

Classes

	Name	Description
	TCztState	This is class SignalUtils.TCztState.
	TFirStateDouble	This is class SignalUtils.TFirStateDouble.
	TFirStateSingle	This is class SignalUtils.TFirStateSingle.
	TIirStateDouble	This is class SignalUtils.TIirStateDouble.
	TIirStateSingle	This is class SignalUtils.TIirStateSingle.

Constants

Name	Description
DspForMtxVec	Product information string.
MaxFirLength	Maximum number of taps for FIR filters.

Functions

	Name	Description
	AdvanceCircularBuffer	Advance the read position of circular buffer.
	AlignString	Align string by inserting space.
	AmpltToDb	Convert amplitude to decibels.
	AmpltToLog	Convert amplitude to logarithmic scale.
	ArBurg	Modified covariance method for autoregressive parameter estimation.
	ArBurgSpectrum	Computes a frequency spectrum with the autoregressive Burg method.
	ArCovariance	Covariance method for autoregressive parameter estimation.
	ArCovarianceSpectrum	Computes a frequency spectrum with the autoregressive "covariance" method.
	ArMCovariance	Modified covariance method for autoregressive parameter estimation.
	ArMCovarianceSpectrum	Computes a frequency spectrum with the autoregressive "modified covariance" method.
	ArYuleWalker	Yule-Walker method for autoregressive parameter estimation.
	ArYuleWalkerSpectrum	Computes a frequency spectrum with the autoregressive Yule-Walker method.
	BandFlip	Flip the frequency band.
	Bartlett	Bartlett window.
	Bartlett	Bartlett window.
	BesselI0	Bessel function of the first kind.
	BiSpectrum	Compute a part of the bispectrum.
	BiSpectrumVert	Compute a part of the bispectrum.
	Blackman	Blackman window.
	Blackman	Blackman window.
	BlackmanExact	Exact blackman window.
	BlackmanExact	Exact Blackman window.
	BlackmanHarris	Blackman-Harris window.
	BlackmanHarris	Blackman Harris window.
	BlackmanOptimal	Optimal Blackman window.
	Chebyshev	Chebyshev's window.
	CircularBuffer	Copy data to a circular buffer.
	CircularFrequency	Adjust frequency in radians to fall in range between 0 and 0.5.
	CircularPhase	Adjust Phase in radians to range between 0 and 2*Pi.
	ColoredNoiseFIR	Computes FIR filter with desired noise/signal coloring response.
	ConjExtend	Conjugate extend a frequency spectrum.
	ConjExtend	The result will be placed in Dst.
	ConsistentParameterFilter	Param can be boolean.
	ConsistentParameterFilter	Filter data with a "consistent parameter" filter.
	ConsistentParameterInit	Initialize a "consistent parameter" filter.
	CosineTappered	Cosine tappered window.
	CplxCepstrum	Compute complex cepstrum.
	CplxCepstrumInv	Compute the inverse complex cepstrum.
	Crest	Returns crest factor, for complex data.
	Crest	Compute Crest factor.
	Czt	Computes the chirp z-transform.
	Czt	Compute the chirp z-transform.
	Czt	Compute the chirp z-transform.
	Czt	Compute the chirp z-transform.
	CztInit	Initializes the chirp z-transform.
	DCCrossingCount	Return the total count of zero crossings within Src starting at index to Index+Len.
	DCCrossingCount	Return the number of DC crossings.
	DcFilter	State parameter holds the filter state.
	DcFilter	:Design a DC filter with alpha parameter and place the transfer function in Num (numerator) and Den (denominator).
	DcFilter	Design a DC filter.
	DelayFilter	Filter data with an integer delay filter.
	DelayFree	Free a delay filter.
	DelayInit	Initialize an integer delay filter.
	Demultiplex	Demultiplex a channel.
	Differentiate	Differentiate the signal.
	DistinctCDF	Compute the probability that given probability distributions are (not) the same.
	DistinctCDF	Returns a measure for the probability that x belongs to the normal distribution with Mean and StdDev.
	EnvelopeDetector	Fast envelope detector.
	ExpAverageFilter	Filter data with an exponential average filter.
	ExpAverageFilter	Filter data with an exponential average filter.
	ExpAverageFilter	Design an exponential filter with Decay parameter and place the transfer function in Num (numerator) and Den (denominator).
	ExpAverageFilter	Filter data with an exponential averaging filter.
	ExponentWindow	Exponential window.
	FindNearest	Return the index of the nearest value.
	FirFilter	Filter data with a FIR filter.
	FirFilter	Filter data with a FIR filter.
	FirFilter	Filter Data with a FIR filter and place the result back in the Data.
	FirFilter	Filter data with a FIR filter.
	FirFree	Free a FIR filter.
	FirImpulse	Computes just impulse response to preset length, no windowing
	FirImpulse	Filter with any window, length must be preset
	FirInit	Initialize a FIR filter.
	FirInitReal	Filter data with a FIR filter.
	FlatTop	Flat-top window.
	FlatTop	Flat top window.
	FractionalFirImpulse	Design an oversampled FIR filter with rectangular window.
	FractionalImpulse	Design a fractional delay allpass FIR filter.
	FractionalKaiser	Fractional Kaiser window.
	FractionalKaiser	Fractional Kaiser window.
	FractionalKaiserImpulse	Design an oversampled FIR filter with a Kaiser window.
	FrequencyResponse	Compute the frequency response.
	FrequencyResponseS	Computes s-domain frequency response (Laplace transform).
	Goertz	The Discrete Fourier transformation (DFT) for vector of frequencies.
	Goertz	The Discrete Fourier transformation (DFT) for vector of frequencies.
	Goertz	The Discrete Fourier transformation (DFT) for a given frequency.
	Goertz	The Discrete Fourier transformation (DFT) for a given frequency.
	GoertzTwo	The Discrete Fourier transformation (DFT) for given two frequencies.
	GoertzTwo	The Discrete Fourier transformation (DFT) for given two frequencies.
	GroupDelay	Computes the group delay of IIR filters.
	Hamming	Hamming window.
	Hamming	Hamming window.
	Hanning	Hanning window.
	Hanning	Hamming window.
	Hilbert	Applies hilbert transform to Src.
	IirFilter	Filter data with an IIR filter.
	IirFilter	This is function SignalUtils.IirFilter.
	IirFilter	Filter data with an IIR filter.
	IirFilter	Filter data with an IIR filter.
	IirFilter	Filter Data and place the result back in Data.
	IirFilter	Filter data with an IIR filter.
	IirFilter	This is function SignalUtils.IirFilter.
	IirFree	Free an IIR filter.
	IirInit	Initialize an IIR filter.
	IirInit	Initialize an IIR filter.
	IirInitBQ	Initialize an IIR filter with second order sections.
	InitCircularBuffer	Initialize a circular buffer.
	Integrate	Integrate signal.
	InverseFilter	Computes FIR filter from specified frequency spectrum.
	Kaiser	Kaiser window.
	Kaiser	Kaiser window.
	KaiserBetaFir	Returns beta parameter for the Kaiser window FIR filter.
	KaiserBetaWindow	Returns beta parameter for frequency analysis with the Kaiser window.
	KaiserBetaWindowAtt	Returns beta parameter for frequency analysis with the Kaiser window.
	KaiserFirLength	Estimate the length of a windowed FIR filter.
	KaiserImpulse	Design a FIR filter with a Kaiser window.
	LogRamp	Compute a logarithmic ramp.
	MaximumCount	Return the number of peaks.
	MedianFilter	Filter data with a median filter.
	MedianFilter	Filter data in Src with a median filter and place the result in Dst.
	MedianFilter	Filter data in Src from SrcIndex to SrcIndex+Len with a median filter and place the result in Dst from DstIndex position on.
	MedianFilter	Filter data in Data with a median filter from DataIndex to DataIndex+Len and place the result back in the Data.
	MedianFree	Free a median filter.
	MedianInit	Initialize a median filter.
	MinimumCount	Return the number of minimums.
	MonitorCircularBuffer	Monitor the circular buffer.
	MovingAverageFilter	Filter data with a moving average filter.
	MovingAverageImpulse	Design an impulse response of a moving average filter.
	Multiplex	Multiplex a channel.
	MusicalNotePitch	Returns musical note pitch, the octave and pitch error in Hz.
	MusicalNotePitch	Returns musical note pitch, the octave and pitch error in Hz.
	MusicalNotePitchToStr	Returns string representation of TMusicalNotePitch.
	MusicalScaleInit	Initializes MusicalScale according to Pitch standard and required octave count.
	NearestDCCrossing	Find the nearest DC crossing.
	NearestMaximum	Find the nearest peak.
	NearestMaximum	Find the nearest peak.
	NearestMinimum	Find the nearest minumum.
	NearestZeroCrossing	Find the nearest zero crossing.
	NextDCCrossing	Locate the next DC crossing.
	NextMaximum	Locate the next maximum.
	NextMinimum	Locate the next minimum.
	NextZeroCrossing	Locate the next zero crossing.
	NotchFilter	Design a notch filer.
	Peak	Find the maximum deviation from the aMean for complex data.
	Peak	Find the maximum deviation from the mean.
	PeekCircularBuffer	Get the number of available samples within the circular buffer.
	PhaseUnwrap	Unwrap the phase of the phase spectrum.
	PhaseWrap	Add phase lag to the unwrapped phase.
	ReadFromCircularBuffer	Copy data from circular buffer.
	RealCepstrum	Compute real cepstrum.
	RemoveDC	In-place version of the RemoveDC method.
	RemoveDC	Not-In-place version of the RemoveDC method.
	RemoveDC	Not-in-place version of the RemoveDC method with source and destination indexes.
	RemoveDC	Remove the DC component.
	ResetCircularBuffer	Reset circular buffer.
	ResizeCircularBuffer	Resize the circular buffer.
	RmsOfSpectrum	Compute RMS of a frequency band from the frequency spectrum.
	RunningAverage	Compute running average on TMtx data.
	RunningAverage	Compute running average.
	SampleAndDecayFilter	Filter data with a sample-and-decay filter.
	SampleAndHoldFilter	Filter data with a sample-and-hold filter.
	SavGolayFilter	Savitzky-Golay FIR smothing filter.
	SavGolayImpulse	Design a Savitzky-Golay polynomial smoothing filter.
	SavGolayImpulse	The resulting H vector contains FIR type impulse response, which can be passed to the FirInit routine.
	SignalFormatDescription	Returns description of the signal.
	SignalWindow	Apply a time window function to the signal.
	SignalWindow	AApply a time window function to the signal.
	SignalWindowToString	Convert a TSignalWindowType to a string.
	SortConj	Conjugate sort complex values.
	SortConj	Conjugate sort complex Vec values from Index to Index+Len.
	SpectrumTypeToString	Convert a TSpectrumType type to a string.
	SquareTone	Generate a square wave function.
	SquareTone	Generate a square wave function.
	SquareToneInit	Initialize the generation of a square tone.
	StdDev	Return standard deviation in aResult.
	StdDev	Return standard deviation in aResult.
	StdDev	Compute standard deviation.
	Tone	Generate a sine function.
	Tone	Generate a sine function.
	ToneInit	Initialize the generation of a sine function.
	TriangleTone	Generate a triangle function.
	TriangleToneInit	Initialize the generation of a triangle function.
	WritePositionCircularBuffer	Get the index in the buffer where the next block of data will be written.
	WriteToCircularBuffer	Copy data to circular buffer.
	ZeroCrossingCount	Return the number of zero crossings.

Structs, Records, Enums

	Name	Description
	TChannel	Stereo channel selection.
	TCircularBufferState	Type used by circular buffering.
	TConsistentParam	Filter state type used by ConsistentParameter filter method.
	TDelayFilterState	This is record SignalUtils.TDelayFilterState.
	TDiffState	Type used by the numerical differentiation routine.
	TFilterType	Defines FIR filter types.
	TFirState	Filter state used by FIR filtering methods.
	TFractionalImpulse	Set of predefined FIR allpass filters suitable for fractional delay filtering. Filter specifications have been relaxed to allow variation of the amplitude in the stop band between 0 and 1 linear scale, but keeping the ripple specification in the passband. When unclear what to select, falp_60dB is recommended.
	TIirState	Filter state used by IIR filtering methods.
	TIntegrateState	Type used by the numerical integration routine.
	TMedianState	Type used by median filter.
	TMonitorMode	Defines signal monitoring type.
	TMusicalNotePitch	This is record SignalUtils.TMusicalNotePitch.
	TRunningPhase	Type used by the PhaseUnwrap procedure.
	TSampleAndHoldState	Filter state used by sample-and-hold filtering routines.
	TSignalWindowMode	Window function definition.
	TSignalWindowType	Window function definition. Specifies window function type to be applied to the signal prior to be passed to the FFT algorithm.
	TSpectrumType	Defines frequency spectrum types.
	TSquareToneState	Type used for square signal function generation.
	TToneState	Type used for sine function generation.
	TTriangleState	Type used for triangle tone generation.
	TWaveletDecomp	Defines the result type of wavelet decomposition.
	TWaveletType	Defines wavelet types.

Types

Name	Description
TToneStateArray	This is type SignalUtils.TToneStateArray.

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