Matched Z-transform method

The matched Z-transform method, also called the pole–zero mapping or pole–zero matching method, and abbreviated MPZ or MZT, 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 s-plane design to z-plane locations z = e s T {\displaystyle z=e^{sT}} , for a sample interval T = 1 / f s {\displaystyle T=1/f_{\mathrm {s} }} .

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