Translations:Frequency response of a digital system/75/en
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Because an AR(p) system is an all-pole system, it follows that a stable causal AR(p) system is necessarily a minimum-delay system. The inverse of a stable AR(p) system is an MA(p) system, in which the poles of the AR(p) system become the zeros of the MA(p) system. Thus we see that the inverse of an AR(p) system is a minimum-delay MA(p) system.