lp2bs_zpk(z, p, k, wo=1.0, bw=1.0)
Return an analog band-stop filter with center frequency :None:None:`wo` and stopband width :None:None:`bw` 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
$$s \rightarrow \frac{s \cdot \mathrm{BW}}{s^2 + {\omega_0}^2}$$This is the "wideband" transformation, producing a stopband with geometric (log frequency) symmetry about :None:None:`wo`.
Zeros of the analog filter transfer function.
Poles of the analog filter transfer function.
System gain of the analog filter transfer function.
Desired stopband center, as angular frequency (e.g., rad/s). Defaults to no change.
Desired stopband width, as angular frequency (e.g., rad/s). Defaults to 1.
Zeros of the transformed band-stop filter transfer function.
Poles of the transformed band-stop filter transfer function.
System gain of the transformed band-stop filter.
Transform a lowpass filter prototype to a bandstop filter.
The following pages refer to to this document either explicitly or contain code examples using this.
scipy.signal._filter_design.lp2hp_zpk
scipy.signal._filter_design.lp2bp_zpk
scipy.signal._filter_design.lp2bs
scipy.signal._filter_design.bilinear_zpk
scipy.signal._filter_design.lp2lp_zpk
Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.
Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)
SVG is more flexible but power hungry; and does not scale well to 50 + nodes.
All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them