cupyx.scipy.signal.lp2lp#
- cupyx.scipy.signal.lp2lp(b, a, wo=1.0)[source]#
Transform a lowpass filter prototype to a different frequency.
Return an analog low-pass filter with cutoff frequency wo from an analog low-pass filter prototype with unity cutoff frequency, in transfer function (‘ba’) representation.
- Parameters:
b (array_like) – Numerator polynomial coefficients.
a (array_like) – Denominator polynomial coefficients.
wo (float) – Desired cutoff, as angular frequency (e.g. rad/s). Defaults to no change.
- Returns:
b (array_like) – Numerator polynomial coefficients of the transformed low-pass filter.
a (array_like) – Denominator polynomial coefficients of the transformed low-pass filter.
Notes
This is derived from the s-plane substitution
\[s \rightarrow \frac{s}{\omega_0}\]