24 Sep
2013
24 Sep
'13
3:08 p.m.
On Tue, Sep 24, 2013 at 2:50 PM, Alexandre Torres Porres porres@gmail.comwrote:
one doubt emerges really soon anyway. Since they are complex (there are two coordinate numbers for each pole and zero) how do I get only one number by, for example, summing or multiplying one pole to the other? as in:
*b1* = -(P0 + P1) *b2* = (P0*P1)
You don't, the coefficients can be complex too. However, I discovered that mirroring (*) every pole and zero results in just real values without imaginary part. I don't have any mathematical proof for this, but it probably wouldn't be too hard to find such.
*) adding another pole/zero for each complex one, like z=-j if you already have a z=j.