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In [[signal processing]], a '''continuous-time''' signal is one in which [[time]] is
[[Continuous time]] occurs when time is [[Sample (signal)|sampled]] [[continuous]]ly. In electrical signals, it is sometimes used interchangeably with [[analog]].
represented as a [[continuum]]. Signals based in continuous time are usually also non-[[quantization (signal processing)|quantized]], making them [[analog signal]]s.

In analog signals, a signal is normally expressed as a function of the continuous-time variable <i>t</i> (e.g., <i>x(t)</i>). Analysis of continuous-time systems often makes use of the [[Laplace transform]].

'''Usage:''' when the phrase "continuous time" is used as a noun it should not by hyphenated; when it is a compound adjective, as when one writes of a "continuous-time [[controller]]", then, at least according to traditional punctuation rules, it should be hyphenated. See [[hyphen]] for more.


(''Usage:'' When the phrase "continuous time" is used as a noun it should not by hyphenated; when it is a compound adjective, as when one writes of a "continuous-time [[controller]]", then, at least according to traditional punctuation rules, it should be hyphenated. See [[hyphen]] for more.)


{{tech-stub}}
{{tech-stub}}

Revision as of 04:30, 16 July 2005

In signal processing, a continuous-time signal is one in which time is represented as a continuum. Signals based in continuous time are usually also non-quantized, making them analog signals.

(Usage: When the phrase "continuous time" is used as a noun it should not by hyphenated; when it is a compound adjective, as when one writes of a "continuous-time controller", then, at least according to traditional punctuation rules, it should be hyphenated. See hyphen for more.)

See Also