Examples
1. [a,b]=filtfilt (1,2i,[i -4 0]) a = [0.00000 - 0.25000i 1.00000 + 0.00000i 0.00000 + 0.00000i] |  |  |
[y]=filtfilt(b,a,x)
Real or complex valued vector or matrix
Real or complex valued vector or matrix
Real or complex valued vector or matrix
This is an Octave function In theory, it forwards and reverse filters the signal and corrects phase distortion upto an extent by a one-pass filter but squares the magnitude response in the process. Practically though, the correction isn't perfect and magnitude response, particularly the stop band is distorted.
1. [a,b]=filtfilt (1,2i,[i -4 0]) a = [0.00000 - 0.25000i 1.00000 + 0.00000i 0.00000 + 0.00000i] | | |