Filter 11243 223988248 2008-07-06T20:59:29Z CrispMuncher 7418073 /* Other */ Added aquarium filters {{wiktionary}} '''Filter''' may refer to: == Chemistry, engineering and materials == In chemistry, engineering, or household usage, a device to separate mixtures. See *[[Filter (chemistry)]] *[[Water filter]] *[[Air filter]] *[[Oil filter]] *[[Pneumatic filter]] *[[Cigarette filter]]. == Optics and photography == * In optics and photography, a device to remove or block certain wavelengths (colors) of light. See **[[filter (optics)]] **[[photographic filter]] **[[infrared filter]] **[[Chelsea filter]] == Signal processing == * In [[signal processing]] applications such as telecommunications and music, an electronic or mechanical device, or mathematical algorithm, to modify the harmonic content of signals. See **[[electronic filter]] **[[audio filter]] **[[line filter]] **See [[filtering problem (stochastic processes)]] for the mathematical formalism. == Computing == * In computing: ** [[filter (higher-order function)]] ** A program to process a data stream: *** [[filter (software)]] ***[[filter (Unix)]] *** [[mail filter]] *** [[Internet filter]] *** [[wordfilter]] *** [[DirectShow]] ** [[Berkeley Packet Filter|BPF]] filter expression used in the qualification of network data == Other == * In mathematics, a certain kind of [[subset]] of a [[partially ordered set]]. See **[[filter (mathematics)]]. * In psychology, a type of learning blockage. See **[[affective filter]]. * In transportation, [[filtering forward]], a practice that cyclists use to pass slow or stopped congested traffic. * An [[Filter (aquarium)|aquarium filter]]. == Proper name == * [[Filter (band)]], an industrial rock band * ''[[Filter (television)]]'', a show on the G4 channel: * ''[[Filter (magazine)]]'', an off-beat indie music magazine * [[Helicon Filter]], a [[raster graphics editor]] ==See also== * [[Filter coffee]], a method for preparing coffee * [[Filter feeder]], an animal that strains food particles from water * [[Potion|Philter]], a magical potion * [[Filtration]] * [[Conversion]] {{disambig}} [[Category:Filters| ]] [[cs:Filtr]] [[da:Filter]] [[de:Filter]] [[es:Filtro]] [[fa:فیلتر]] [[fr:Filtre]] [[ko:필터]] [[it:Filtro]] [[he:מסנן]] [[nl:Filter]] [[no:Filter]] [[nn:Filter]] [[pl:Filtr]] [[pt:Filtro]] [[ru:Фильтр (значения)]] [[simple:Filter (disambiguation)]] [[fi:Suodatin]] [[sv:Filter]] [[zh:Filter]]