Talk:Minimum phase
From Wikipedia, the free encyclopedia
In the maximum phase section i think there is an error repeated twice. Instead of "anti-causal and stable" it should be "anti-causal and un-stable" ?
Is the following section correct?
"Minimum phase in the time domain For all causal and stable systems that have the same magnitude response, the minimum phase system has its energy concentrated near the end of the impulse response. i.e., it maximizes the following function which we can think of as the delay of energy in the impulse response."
Even if it is correct it is not clear.
[edit] Error in article: in control theory, minimum phase systems might be unstable
Sorry, but the first sentence of the article is wrong:
In control theory and signal processing, a linear, time-invariant system is minimum-phase if the system and its inverse are causal and stable.
Instead, in control theory an LTI system is minimum-phase if it has stable zeros (or alternatively, if the inverse is stable). The definition is NOT coupled to "causal" nor to "stability" of the system.
MartinOtter 19:53, 3 February 2007 (UTC)
