Abstract
A signal is defined as continuous within a time range if its amplitude is specified for all t in that range, except possibly at a finite number of discontinuities. If a continuous time variable is quantized, that is, if t is represented by a set of distinct values denoted by tk, where k takes on positive integer values exclusively, the signal is defined only at discrete-time instants, known as sampling instants. Signals which are defined only at discrete instants of time are called discrete-time, or just discrete signals and can be represented by a sequence or collection of numbers.
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© 1991 Springer Science+Business Media New York
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Perdikaris, G.A. (1991). Discrete-Time Systems. In: Computer Controlled Systems. International Series on Microprocessor-Based Systems Engineering, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-7929-2_3
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DOI: https://doi.org/10.1007/978-94-015-7929-2_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4100-5
Online ISBN: 978-94-015-7929-2
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