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FOSSEE Signal Processing Toolbox >> FOSSEE Signal Processing Toolbox > sos2zp

sos2zp

This function converts series second-order sections to zeros, poles, and gains (pole residues).

Calling Sequence

z = sos2zp (sos)
z = sos2zp (sos, g)
[z, p] = sos2zp (...)
[z, p, k] = sos2zp (...)

Parameters

sos:

matrix of real or complex numbers

g:

real or complex value, default value is 1

z:

column vector

p:

column vector

Description

This is an Octave function. This function converts series second-order sections to zeros, poles, and gains (pole residues). The input is the sos matrix and the second parameter is the overall gain, default value of which is 1. The outputs are z, p, k. z and p are column vectors containing zeros and poles respectively, and k is the overall gain.

Examples

[a,b,c]=sos2zp([1,2,3,4,5,6])
a =
-1.0000 + 1.4142i
-1.0000 - 1.4142i
b =
-0.6250 + 1.0533i
-0.6250 - 1.0533i
c =  1

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