General purpose signal processing routines.

Types

Name	Summary
PCircularBufferState	Pointer to the TCircularBufferState.
PFirState	Pointer to TFirState.
PFractionalFirState	Pointer to the TFractionalFirState record.
PIirState	Pointer to TIirState.
PMedianState	Pointer to the TMedianState record.
PToneState	Pointer to TToneState.
PTriangleState	Pointer to TTriangleState.
PWaveletState	Pointer to TWaveletState used for wavelet processing.
TChannel	Stereo channel selection.
TCircularBufferState	Type used by circular buffering.
TConsistentParam	Filter state type used by ConsistentParameter filter method.
TDiffState	Type used by the numerical differentiation routine.
TFilterType	Defines FIR filter types.
TFirState	Filter state used by FIR filtering methods.
TFractionalFirState	Type used by the fractional FIR filter.
TGoertzState	Goertzal function state type.
TIirState	Filter state used by IIR filtering methods.
TIntegrateState	Type used by the numerical integration routine.
TMedianState	Type used by median filter.
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.
TSpectrumType	Defines frequency spectrum types.
TStringAlign	Defines string alignement.
TToneState	Type used for sine function generation.
TTriangleState	Type used for triangle tone generation.
TWaveletDecomp	Defines the result type of wavelet decomposition.
TWaveletState	State variable used by wavelets.
TWaveletType	Defines wavelet types.

Routines

Name	Summary
AdvanceCircularBuffer	Advance the read position of circular buffer.
AlignString	Align string by inserting space.
AmpltToDb	Convert amplitude to decibels.
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.
BesselI0	Bessel function of the first kind.
BiSpectrum	Compute a part of the bispectrum.
BiSpectrumVert	Compute a part of the bispectrum.
Blackman	Blackman window.
BlackmanExact	Exact blackman 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.
ConjExtend	Conjugate extend a frequency spectrum.
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	Compute Crest factor.
Czt	Compute the chirp z-transform.
DCCrossingCount	Return the number of DC crossings.
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.
EnvelopeDetector	Fast envelope detector.
ExpAverageFilter	Filter data with an exponential average filter.
ExponentWindow	Exponential window.
FindNearest	Return the index of the nearest value.
FirFilter	Filter data with a FIR filter.
FirFree	Free a FIR filter.
FirImpulse	Compute a FIR impulse response filter with user defined Window type.
FirInit	Initialize a FIR filter.
FlatTop	Flat-top window.
FractionalFirImpulse	Design an oversampled FIR filter with rectangular 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 a given frequency.
GoertzInit	Initializes the Goertzal algorithm.
GroupDelay	Computes the group delay of IIR filters.
GroupDelay2
Hamming	Hamming window.
Hanning	Hanning window.
Hilbert	Applies hilbert transform to Src.
IirFilter	Filter data with an IIR filter.
IirFree	Free an IIR filter.
IirInit	Initialize an IIR filter.
InitCircularBuffer	Initialize a circular buffer.
Integrate	Integrate signal.
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.
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.
NearestDCCrossing	Find the nearest DC crossing.
NearestMaximum	Find the nearest peak.
NearestMean
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 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	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.
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.
SignalFormatDescription	Returns description of the signal.
SignalWindow	Apply a time window function to the signal.
SignalWindowToString	Convert a TSignalWindowType to a string.
SortConj	Conjugate sort complex values.
SpectrumTypeToString	Convert a TSpectrumType type to a string.
StdDev	Compute standard deviation.
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.
WaveletDecompose	Apply wavelet decomposition.
WaveletInit	Select and initialize a wavelet.
WaveletReconstruct	Apply wavelet reconstruction.
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.

Constants

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

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