Function bessel¶
function bessel(int) dsp¶
zpk bessel(int N)Analog Bessel/Thomson lowpass filter prototype (normalized cutoff = 1 rad/s).
Returns the zeros, poles, and gain of an Nth-order analog Bessel filter. Bessel filters have maximally flat group delay and linear phase response in the passband, with minimal step-response ringing.Uses a hardcoded table for orders 1-24; returns a gain-only filter for unsupported orders.Compatible with scipy.signal.bessel with output='zpk', analog=True, norm='phase'.
| N | Filter order (must be 0-24). Returns a gain-only filter if N == 0 or N > 24. |
| ZPK representation of the analog lowpass filter prototype. |
Fully qualified name: kfr::bessel(int)
Declared at dsp/iir_design.hpp:148
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