Anti-aliasing filter
id:
anti-aliasing-filter-176-15274596
title:
Anti-aliasing filter
text:
An anti-aliasing filter (AAF) is a filter used before a signal sampler to restrict the bandwidth of a signal to satisfy the Nyquist–Shannon sampling theorem over the band of interest. Since the theorem states that unambiguous reconstruction of the signal from its samples is possible when the power of frequencies above the Nyquist frequency is zero, a brick wall filter is an idealized but impractical AAF. A practical AAF makes a trade off between reduced bandwidth and increased aliasing. A practi
brand slug:
wiki
category slug:
encyclopedia
description:
Mathematical transformation reducing the damage caused by aliasing
original url:
https://en.wikipedia.org/wiki/Anti-aliasing_filter
date created:
2004-12-18T00:09:11Z
date modified:
2024-09-04T04:28:16Z
main entity:
{"identifier":"Q858325","url":"https://www.wikidata.org/entity/Q858325"}
image:
fields total:
13
integrity:
15