Sampling (signal processing): Difference between revisions

Revision as of 09:20, 10 January 2024

Revision as of 09:24, 10 January 2024

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{{Short description|Measurement of a signal at discrete time intervals}}

{{Other uses|Sampling (disambiguation)}}

[[ImageFile:SignalMICHAEL SamplingROSEN 2022 (5) (cropped).svgjpg|thumb|300px|Signal sampling representation. The continuous signal ''S''(''t'') is represented with a green colored line while the discrete samples are indicated by the blue vertical lines.]]

In [[signal processing]], '''sampling''' is the reduction of a [[continuous-time signal]] to a [[discrete-time signal]]. A common example is the conversion of a [[sound wave]] to a sequence of "samples".

A '''sample''' is a value of the [[signal]] at a point in time and/or space; this definition differs from [[Sampling (statistics)|the term's usage in statistics]], which refers to a set of such values.{{efn-ua|For example, "number of samples" in signal processing is roughly equivalent to "[[sample size]]" in statistics.}}