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Continuous signal
A
continuous signal
or a
continuous-time signal
is a varying quantity (a
signal
) whose domain, which is often time, is a
continuum
(e.g., a
connected
interval of the
reals
). That is, the function's domain is an
uncountable set
. The function itself need not be
continuous
. To contrast, a
discrete time
signal has a
countable
domain, like the
natural numbers
.
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