*#REDIRECT [[Sampling (signal processing)]] ▼{{Otheruses4|sampling a signal|other uses of sample or sampling|sample}}
A '''sample''' refers to a value or set of values at a point in time and/or space.
The defining point of a sample is that it is a chosen value out of a [[continuous signal]].
The sample can be continuous-valued or discrete-valued.
A theoretical [[ideal sampler]] multiplies a continuous signal with a [[Dirac comb]].
This multiplication "picks out" values but the result is still continuous-valued.
If this signal is then discretized (i.e., converted into a [[sequence]]) and quantized along all dimensions it becomes a [[discrete signal]].
== See also ==
▲*[[Sampling (signal processing)]]
*[[Aliasing]], [[Anti-aliasing]], [[Anti-aliasing filter]]
*[[Digital signal processing]]
*[[Nyquist-Shannon sampling theorem]]
*[[Sampling rate]]
*[[Signal processing]]
*[[Signal (information theory)]]
[[Category:Digital signal processing]]
[[Category:Signal processing]]
[[it:Campionamento audio]]
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