residuez

Parameters

b:

Real or complex valued vector or matrix

a:

Real or complex valued vector or matrix

Description

This is an Octave function It compute the PFE of filter H(z)= B(z)/A(z) where inputs b and a are vectors specifying the digital filter.

Examples

1. [a,b,c,d]=residuez([i 2i 3i; -4 1 4i],[1 2 3]) a = [0.6262 - 1.4412i; -0.4039 + 1.4658i] b = [-1.0000 - 1.4142i; -1.0000 + 1.4142i] c = [-0.22222 - 0.97531i 0.33333 + 0.51852i 0.00000 - 0.11111i; 0.00000 - 1.33333i] d = 1