TSignalFilter Members

The following tables list the members exposed by TSignalFilter.

	Name	Description
	DelayFilterState	This is DelayFilterState, a member of class TSignalFilter.
	FIRState	The record holds the initialized FIR filter ready to be passed to FirFilter routine.
	IIRState	The record holds the initialized IIR filter ready to be passed to FirFilter routine.
	MedianState	The record holds the initialized Median filter ready to be passed to MedianFilter routine.

Public Methods

	Name	Description
	Append	Appends Sample to the end of the signal.
	Copy	Copies signal Data and sampling frequency information.
	Crest	Compute the CREST parameter.
	Init	Initialize streaming filter with Taps.
	InputsDirty	If all Inputs[i] are dirty the function returns true.
	InternalPull	When called, the method will pass Update requests recursively to all connected objects.
	Invalidate	Notifies all connected components that this component has fresh data.
	LoadFromStream	Load the component from stream.
	MarksToStrings	Convert marks to strings.
	MinMax	Find minimum and maximum amplitude and store the result in the MinAmplt and MaxAmplt properties.
	ParamUpdate	The method can be assigned to some other component even handler, as a notification that a parameter has changed and that Self should consider a recalculation.
	Peak	Find the maximum deviation of the signal from its mean value.
	PipeReset	Recursively processes all connected components backward and calls Reset method.
	Prepare	Prepare the defined filter for streaming.
	Process	Filter data in Src and place the result in Dst.
	ProcessSample	This is the overview for the ProcessSample method overload.
	Pull	Request recalculation of the entire chain of all connected components.
	PullUntilEnd	Calls Pull until pipeEnd is returned.
	Reset	Same as setting Prepared to false. Reinitializes the delay lines.
	SaveToStream	Save the component state to stream.
	Size	Assign the size of the signal from Src.
	StateSpaceIIR	Returns the currently designed IIR filter in state space form.
	TransferFunIIR	Returns the currently designed IIR filter in zero pole form.
	Update	Request recalculation of the data and place the result in Self.
	UpdateNotify	Call this method only, if SuspendNotifyUpdate is True.
	ValuesToStrings	Convert values to strings.
	ZeroPoleIIR	Returns the currently designed IIR filter in zero pole form.

Public Properties

	Name	Description
	BandwidthH	Returns the upper bandwidth edge of the signal.
	BandwidthL	Returns the lower bandwidth edge of the signal.
	CValues	Default property to access values of a complex signal.
	Dt	Time between two consecutive samples.
	HzRes	Frequency resolution obtained, if an FFT algorithm would be run on the data.
	ItemNumber	Number to label the object when it is an item in the List.
	Marks	Stores the time stamps and amplitude of selected samples.
	MaxAmplt	Stores the maximum amplitude of the signal found by the MinMax method.
	MaxX	Use the MaxX property to store the time stamp (in seconds) of the right most sample.
	MinAmplt	Stores the minimum amplitude of the signal found by the MinMax method.
	MinX	Use the MinX property to store the time stamp of the left-most sample.
	PipeState	Returns the state of the pipe after the last update.
	Prepared	Returns true, if the filter has been succesfully initialized.
	SamplingTime	The length of the signal in seconds.
	SuspendNotifyUpdate	Set this property to True, to prevent calling OnNotifyUpdate from the Update Method.
	UsesInputs	Set it to True to indicate, that valid signals will be connected to the Input or Inputs properties.
	Values	Default property to access values of a real signal.

Published Properties

	Name	Description
	Active	Set active to false to suppress the propagation of the Pull request and the subsequent call to the Update method.
	AutoFilterOrder	If True, the Order/FirLength of the IIR/FIR filters will be automatically estimed.
	BandWidth	Return the bandwidth of the signal.
	Beta	Beta is the parameter for the Kaiser window.
	ChannelCount	Get or set the number of channels multiplexed in the data property.
	Complex	Set this property to true, to request computation using complex numbers.
	Continuous	If True, the component will pass on the udpate request to the connected component.
	Data	Stores the result of the processing.
	DownDelay	The phase delay (must be less then DownSample) used by the multi-rate FIR filter.
	DownSample	The downsample factor used by the multi-rate FIR filter.
	ExternalTaps	Set this property to True, if you have defined your own filter response and have placed the taps in the Taps property.
	Filters	Holds a list of defined filters.
	FirLength	Defines the length of the FIR/Median filter, if the AutoFilterOrder property is false.
	FirMethod	Specifies the FIR filter design method to be used.
	FloatPrecision	may not have default to allow switching of default precision
	FloatPrecisionLock	Set this property to true to lock changes to FloatPrecision property.
	FractionalDelay	Defines the combined fractional delay of the input signal (integer + fraction).
	FractionalDesignSpec	Defines the FIR filter properties used for fractional delay filtering.
	GridDensity	Grid density used by the remez exchange algorithm for optimal FIR filter design.
	IgnoreAtt	Set it to True, if you want to explicitelly define the Beta parameter for the Kaiser window, when designing a FIR filter windowed with a Kaiser window.
	IIRFrequencyTransform	Specifies the IIR frequency transformation method to use.
	IirMethod	Specifies the IIR filter design method to be used.
	Input	Must be "Hidden" unless it is published
	IsDouble	may not have default to allow switching of default precision
	Length	Get or set the length of the signal in samples.
	NormalizedFrequency	The value of the normalized frequency used when defining multiband filters.
	OnAfterUpdate	The event is triggered after the call to the Update method.
	OnBeforeUpdate	The event is triggered just before the call to the Update method.
	OnDisplayUpdate	The event is triggered after the OnAfterUpdate event. Use this event to update any associated charts or graphs or result tables.
	OnGetInput	If the Input property is not assigned, the component will call OnGetInput.
	OnNotifyUpdate	The event is called after a call to InternalUpdate, OnAfterUpdate and OnDisplayUpdate from within the Update method.
	OnParameterUpdate	The event is triggered when ParamUpdate method is called. The ParamUpdate method is usually called by component editors when a value was changed by the user and the editor was "Live".
	Order	Defines the order of the IIR filters, if AutoFilterOrder is false.
	Response	Specifies the type of the filter, to be designed.
	SamplingFrequency	Defines the sampling frequency of the signal.
	ScaleFactor	Defines the factor by which to multiply the input signal.
	Taps	Holds the taps for the filter.
	UpDelay	The phase delay (must be less then UpSample) used by the multi-rate FIR filter.
	UpSample	The upsample factor used by the multi-rate FIR filter.
	UseNormalizedFrequency	True, if you want to normalize the frequency of the defined bands.
	Wavelet	Set the wavelet to be used for wavelete decomposition.
	WaveletDecomp	Selects the result of wavelet decomposition.
	WaveletP1	Defines the first wavelet parameter (if required).
	WaveletP2	Defines the second wavelet parameter (if required.)
	Window	Specifies the window type to be used when designing windowed FIR filters.

Links

TSignalFilter Class, Legend, Public Fields, Public Methods, Public Properties, Published Properties

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