bundles / scipy latest / scipy / signal / _spline_filters / symiirorder1

function

`scipy.signal._spline_filters:symiirorder1`

source: build-install/usr/lib/python3.14/site-packages/scipy/signal/_spline_filters.py:695

Signature

def symiirorder1(signal, c0, z1, precision = -1.0)

Summary

Implement a smoothing IIR filter with mirror-symmetric boundary conditions using a cascade of first-order sections.

Extended Summary

The second section uses a reversed sequence. This implements a system with the following transfer function and mirror-symmetric boundary conditions

                c0
H(z) = ---------------------
        (1-z1/z) (1 - z1 z)

The resulting signal will have mirror symmetric boundary conditions as well.

Parameters

signal : ndarray: The input signal. If 2D, then the filter will be applied in a batched fashion across the last axis.
c0, z1 : scalar: Parameters in the transfer function.
precision : float, optional: Specifies the precision for calculating initial conditions of the recursive filter based on mirror-symmetric input.

Returns

output : ndarray: The filtered signal.

Aliases

scipy.signal.symiirorder1