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{{Orphan|date=February 2011}}
The '''matched Z-transform method''', also called the '''pole–zero mapping''' or '''pole–zero matching method''', is a technique for converting a [[continuous-time]] filter design to a [[discrete-time]] filter ([[digital filter]]) design.
The method works by mapping all poles and zeros of the [[Laplace transform|s-plane]] design to [[Z-transform|z-plane]] locations ''z'' = exp(''sT''), for a sample interval ''T''.
Alternative methods include the [[bilinear transform]] and [[impulse invariance]] methods.
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