Inverse System
A system is invertible if we can uniquely determine its input from its output. I.e., we can find a system such that if we apply followed by, we obtain the identity system . (See Inverse matrix for a finite-dimensional analog). I.e.,
Suppose that is input to system and gives output .
Applying the inverse system to gives the following.
So we see that the inverse system allows us to determine uniquely the input from the output .
Read more about this topic: Minimum Phase
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