bundles / scipy latest / scipy / signal / _spline / symiirorder1_ic

built-in

`scipy.signal._spline:symiirorder1_ic`

Summary

Compute the (forward) mirror-symmetric boundary conditions for a smoothing IIR filter that is composed of cascaded first-order sections.

Extended Summary

The starting condition returned by this function is computed based on the following transfer function

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

Parameters

input : ndarray: The input signal. If 2D, then it will find the initial conditions for each of the elements on the last axis.
z1 : scalar: Parameter in the transfer function.
precision: Specifies the precision for calculating initial conditions of the recursive filter based on mirror-symmetric input.

Returns

z_0 : ndarray: The mirror-symmetric initial condition for the forward IIR filter.

Aliases

scipy.signal._spline.symiirorder1_ic