If ν = 2W, sampling is said to occur at the Nyquist rate.
If ν < 2W, sub-Nyquist sampling is said to take place, and some information will be lost; this may be quite acceptable in certain cases.
If ν > 2W, super-Nyquist sampling occurs; it cannot cause any more information to be extracted than sampling at the Nyquist rate.
Super-Nyquist sampling (at somewhat over the Nyquist rate) is, however, commonly employed to allow a margin of safety since there may be some doubt about the actual value of the bandwidth. There is no harm in it, if it is convenient, but the samples taken at a super-Nyquist rate will not be independent of one another.
See also discrete and continuous systems.
"Nyquists criterion." A Dictionary of Computing. . Encyclopedia.com. (August 15, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/nyquists-criterion
"Nyquists criterion." A Dictionary of Computing. . Retrieved August 15, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/nyquists-criterion
Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).
Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.
Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:
Modern Language Association
The Chicago Manual of Style
American Psychological Association
- Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
- In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.