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IIRFilters.ChebyshevIFilter Method (integer, TSample, array of TSample, TFilterType, boolean, TVec, TVec, TSample, TIirFrequencyTransform)
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Design Chebyshev type I IIR filter.

C#
public double ChebyshevIFilter(int Order, double PassRipple, double[] CutoffFreq, TFilterType FilterType, bool Analog, TVec z, TVec p, ref double k, TIirFrequencyTransform IirFrequencyTransform);
Remarks

Design Chebyshev type I filter of Order with CutoffFreq frequencies and of FilterType type. Set Analog to True, to request and analog filter design in s-plane or set it to false to obtain a digital filter design in z-plane. PassRipple defines the passband ripple in dB. The CutoffFreq must be in range between 0 and 1 (Sampling frequency = 2) in case of a digital filter design. 

IIrFrequencyTransform specifies when and how will the frequency band transformation be applied. The resulting transfer function is returned in the zero-pole form, with z,p,k variables.

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