In mathematics and signal processing, the Z-transform converts a discrete-time signal, which is a sequence of real or complex numbers, into a complex valued frequency-domain (the z-domain or z-plane) representation. It can be considered a discrete-time counterpart of the Laplace transform (the s-domain or s-plane).
In mathematics and signal processing, the Z-transform converts a discrete-time signal, which is a sequence of real or complex numbers, into a complex valued frequency-domain (the z-domain or z-plane) representation. It can be considered a discrete-time counterpart of the Laplace transform (the s-domain or s-plane).
Source: Wikipedia "Z-transform" · CC BY-SA 4.0
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