creates a lowpass Chebyshev type 2 filter of order n.

Chebyshev2FilterModel[{n, c}]
uses the cutoff frequency .

Chebyshev2FilterModel[{"type", spec}]
uses the full filter specification .

Chebyshev2FilterModel[{"type", spec}, var]
expresses the model in terms of the variable var.


  • Chebyshev2FilterModel returns the filter as a TransferFunctionModel.
  • Chebyshev2FilterModel[n] uses machine precision to return a filter with attenuation of at frequency 1.
  • In Chebyshev2FilterModel[{"type", spec}], filter specification can be any of the following:
  • {"Lowpass",{p,s},{ap,as}}lowpass filter specification
    {"Highpass",{s,p},{as,ap}}highpass filter specification
    {"Bandpass",{s1,p1,p2,s2},{as,ap}}bandpass filter specification
    {"Bandstop",{p1,s1,s2,p2},{ap,as}}bandstop filter specification
  • Frequency values should be given in an ascending order.
  • Values and are respectively absolute values of passband and stopband attenuations.
  • Given a gain fraction , the attenuation .
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