MinimumPhaseSystem
A minimum phase system is a concept in control theory and signal processing. It describes a causal and stable linear time-invariant (LTI) system where all its finite-duration impulse responses have their energy concentrated at the beginning of the response. More formally, a minimum phase system is characterized by its transfer function having all its zeros and poles in the open left-half of the complex plane. This means that for a rational transfer function, the real parts of all the roots of the numerator (zeros) and the denominator (poles) are negative.
The property of having zeros only in the open left-half plane is crucial. If a system has
Minimum phase systems have several desirable properties. For instance, their inverse systems are also minimum phase