Talk:Minimum phase

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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)

What is your source? The page is consistent with the definitions given at <http://ccrma.stanford.edu/~jos/filters/Definition_Minimum_Phase_Filters.html>. LachlanA (talk) 16:37, 18 May 2008 (UTC)
I'm confused about maximum phase definition. Quoting Manolakis, Ingle, Kogon - Statistical and Adaptive Signal Processing (2005):
  (...) In an analogous manner, we can define a maximum-phase system as one in which both the
  system and its inverse are anticausal and stable. A PZ system then is maximum-phase
  if all its poles and zeros are outside the unit circle. (...)

—Preceding unsigned comment added by 200.193.3.224 (talk) 04:10, 5 June 2008 (UTC)