Function chebyshev2¶
function chebyshev2(int, double) dsp¶
zpk chebyshev2(int N, double rs)Analog Chebyshev Type II lowpass filter prototype (normalized cutoff = 1 rad/s).
Type II filters are the dual of Type I: they have ripple only in the stopband and a monotonic (ripple-free) passband, with the same asymptotic rolloff rate as Type I for a given order.Compatible with scipy.signal.cheby2 with output='zpk' and analog=True.
| N | Filter order (must be >= 0). Returns a gain-only filter if N == 0. |
| rs | Minimum stopband attenuation in decibels (positive value). |
| ZPK representation of the analog lowpass filter prototype. |
Fully qualified name: kfr::chebyshev2(int, double)
Declared at dsp/iir_design.hpp:91
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