lp2hp_zpk(z, p, k, wo=1.0)
Return an analog high-pass filter with cutoff frequency :None:None:`wo` from an analog low-pass filter prototype with unity cutoff frequency, using zeros, poles, and gain ('zpk') representation.
This is derived from the s-plane substitution
$$s \rightarrow \frac{\omega_0}{s}$$This maintains symmetry of the lowpass and highpass responses on a logarithmic scale.
Zeros of the analog filter transfer function.
Poles of the analog filter transfer function.
System gain of the analog filter transfer function.
Desired cutoff, as angular frequency (e.g., rad/s). Defaults to no change.
Zeros of the transformed high-pass filter transfer function.
Poles of the transformed high-pass filter transfer function.
System gain of the transformed high-pass filter.
Transform a lowpass filter prototype to a highpass filter.
The following pages refer to to this document either explicitly or contain code examples using this.
scipy.signal._filter_design.lp2hp
scipy.signal._filter_design.lp2bp_zpk
scipy.signal._filter_design.lp2bs_zpk
scipy.signal._filter_design.bilinear_zpk
scipy.signal._filter_design.lp2lp_zpk
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