Talk:Linear phase

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[edit] Linear phase symmetrical impulse response

Contrary to what the article current implies, a symmetrical impulse response is not a necessary condition for a discrete-time FIR to be phase-linear (it is merely a sufficient condition). It isn't hard to come up with an example which is asymmetrical, yet linear-phase nonetheless.

However, in the case of continuous-time FIRs (which don't exist in the real world), symmetry is a necessary condition for linear-phase.

Oli Filth 09:24, 13 December 2006 (UTC)