IIRFilters::BesselFilter Function

Overload List

#	Signature	Description
1	double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec z, TVec p, double &k, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);	Design Bessel IIR filter.
2	double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec Num, TVec Den, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);	The resulting transfer function is returned in the numerator/denumerator form with num and den.
3	double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TMtx A, TVec B, TVec C, double* &d);	The resulting transfer function is returned in the state-space form with A,B,C,D variables.

Overload 1: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec z, TVec p, double &k, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

Design Bessel IIR filter.

#	Name	Type
1	Order	int
2	CutoffFreq	const DewArray<double> &
3	FilterType	TFilterType
4	Analog	bool
5	z	TVec *
6	p	TVec *
7	k	double &
8	IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog	TIirFrequencyTransform

Remarks:

Design Bessel filter of Order with CutoffFreq frequencies and of FilterType type. Set Analog to True, to request an analog filter design in s-plane or set it to false to obtain a digital filter design in z-plane. CutoffFreq must be in range between 0 and 1 (Sampling frequency = 2).

IIrFrequencyTransform specifies when and how will the frequency band transformation be applied. Bessel filters typically do not preserve a flat group delay once transformed to z-domain. The routine uses bilinear transformation to map from s to z-domain. Use matched-Z transform to preserve more phase properties of the Bessel filters in the z-domain. The resulting transfer function is returned in the zero-pole form, with z,p,k variables.

Declared in Dew::Signal::Units::IIRFilters · Dew.Signal/Units.IIrFilters.h · Cross-compiler

Overload 2: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec Num, TVec Den, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

The resulting transfer function is returned in the numerator/denumerator form with num and den.

#	Name	Type
1	Order	int
2	CutoffFreq	const DewArray<double> &
3	FilterType	TFilterType
4	Analog	bool
5	Num	TVec *
6	Den	TVec *
7	IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog	TIirFrequencyTransform

Declared in Dew::Signal::Units::IIRFilters · Dew.Signal/Units.IIrFilters.h · Cross-compiler

Overload 3: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TMtx A, TVec B, TVec *C, double &d);

The resulting transfer function is returned in the state-space form with A,B,C,D variables.

#	Name	Type
1	Order	int
2	CutoffFreq	const DewArray<double> &
3	FilterType	TFilterType
4	Analog	bool
5	A	TMtx *
6	B	TVec *
7	C	TVec *
8	d	double &

See Also: IirFilter, IIRFilters::ButterFilter, IIRFilters::ChebyshevIFilter, IIRFilters::ChebyshevIIFilter, IIRFilters::EllipticFilter, IIRFilters::BesselAnalog, Bilinear, IIRFilters::ButterOrder

Declared in Dew::Signal::Units::IIRFilters · Dew.Signal/Units.IIrFilters.h · Cross-compiler

Overload List

Overload 1: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec *z, TVec *p, double &k, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

Overload 2: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec *Num, TVec *Den, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

Overload 3: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TMtx *A, TVec *B, TVec *C, double &d);

Overload 1: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec z, TVec p, double &k, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

Overload 2: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TVec Num, TVec Den, TIirFrequencyTransform IirFrequencyTransform = TIirFrequencyTransform::ftStateSpaceAnalog);

Overload 3: double BesselFilter(int Order, const DewArray<double> &CutoffFreq, TFilterType FilterType, bool Analog, TMtx A, TVec B, TVec *C, double &d);