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Additional
digital signal (signal processing)
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Digital signal (signal processing)
In the context of
Digital signal processing
(DSP), a
digital signal
is a
discrete-time signal
for which not only the time but also the amplitude has discrete values; in other words, its samples take on only values from a
discrete set
(a
countable
set that can be
mapped one-to-one
to a subset of
integers
). If that discrete set is finite, the discrete values can be represented with
digital words
of a finite width. Most commonly, these discrete values are represented as
fixed-point
words (either
proportional
to the waveform values or
companded
) or
floating-point
words.
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