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The Z-transform converts a discrete time-domain signal, which is a sequence of real or complex numbers, into a complex frequency-domain representation.

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votes
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According to this paper: $y(t)$ is stationary if all of the roots (of characteristic equation) lie outside the unit circle Here, $y(t)$ is causal. To me it seems the case is exactly the opposit …
asked Apr 20 '16 by Dole
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Does anyone have a reference handy on how to convert poles and zeros of a system to differential/difference equations. Here is a quick draft of math, but I am not sure if it's at all correct. First, …
asked Jun 28 '16 by Dole
1
vote
Your question is fairly broad, let me answer it step by step. First of all $H(s)$ is indeed called the transfer function, and is the laplace transform of the impulse response. It's useful for findin …
answered Dec 28 '15 by Dole
2
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I would like to understand the "justification" for the bilinear transform. The basic idea as I understand it is that by integration rule of Laplace transform we have for continuous $y(t)$: $$\mathcal …
asked Dec 21 '19 by Dole