scipy.signal.symiirorder1

scipy.signal.symiirorder1()

symiirorder1(input, c0, z1 {, precision}) -> output

Description:

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

Inputs:

input – the input signal. c0, z1 – parameters in the transfer function. precision – specifies the precision for calculating initial conditions

of the recursive filter based on mirror-symmetric input.

Output:

output – filtered signal.