Crossword clues for filter
filter
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Filter \Fil"ter\, n. [F. filtre, the same word as feutre felt, LL. filtrum, feltrum, felt, fulled wool, this being used for straining liquors. See Feuter.] Any porous substance, as cloth, paper, sand, or charcoal, through which water or other liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air.
Filter bed, a pond, the bottom of which is a filter composed of sand gravel.
Filter gallery, an underground gallery or tunnel, alongside of a stream, to collect the water that filters through the intervening sand and gravel; -- called also infiltration gallery.
Filter \Fil"ter\, v. t. [imp. & p. p. Filtered; p. pr. & vb. n. Filtering] [Cf. F. filter. See Filter, n., and cf. Filtrate.] To purify or defecate, as water or other liquid, by causing it to pass through a filter.
Filtering paper, or Filter paper, a porous unsized paper, for filtering.
Filter \Fil"ter\, v. i. To pass through a filter; to percolate.
Filter \Fil"ter\, n. Same as Philter.
Douglas Harper's Etymology Dictionary
early 15c., "piece of felt through which liquid is strained," from Old French feutre "felt, felt hat, carpet" (Modern French filtre) and directly from Medieval Latin filtrum "felt" (used to strain impurities from liquid), from West Germanic *filtiz (see felt (n.)). Figurative use from c.1600. As a pad of absorbent material attached to a cigarette, from 1908.
1570s (transitive), from French filtrer or from Medieval Latin filtrare, from filtrum "felt" (see filter (n.)). The figurative sense is from 1830. Intransitive use from 1798. Related: Filtered; filtering.
Wiktionary
n. 1 A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another. 2 electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies. 3 Any item, mechanism, device or procedure that acts to separate or isolate. vb. 1 (context transitive English) To sort, sift, or isolate. 2 (context transitive English) To diffuse; to cause to be less concentrated or focused. 3 (context intransitive English) To pass through a filter or to act as though passing through a filter. 4 (context intransitive English) To move slowly or gradually; to come or go a few at a time. 5 (context intransitive English) To ride a motorcycle between lanes on a road
WordNet
v. remove by passing through a filter; "filter out the impurities" [syn: filtrate, strain, separate out, filter out]
pass through; "Water permeates sand easily" [syn: percolate, sink in, permeate]
run or flow slowly, as in drops or in an unsteady stream; "water trickled onto the lawn from the broken hose"; "reports began to dribble in" [syn: trickle, dribble]
n. device that removes something from whatever passes through it
an electrical device that alters the frequency spectrum of signals passing through it
Wikipedia
Filter, filtering or filters may refer to:
In mathematics, a filter is a special subset of a partially ordered set. For example, the power set of some set, partially ordered by set inclusion, is a filter. Filters appear in order and lattice theory, but can also be found in topology whence they originate. The dual notion of a filter is an ideal.
Filters were introduced by Garrett Birkhoff in 1935 and Henri Cartan in 1937 and subsequently used by Bourbaki in their book Topologie Générale as an alternative to the similar notion of a net developed in 1922 by E. H. Moore and H. L. Smith.
Filter is an American television series on the G4 cable television channel which follows a countdown format. It was canceled in December 2005, resurrected in a re-formatted form, and then once again was canceled in August 2006. It was airing as an interstitial program during commercial breaks prior to May 2012. The show allows registers users (or viewers) to vote in Top Ten lists.
Aquarium filters are critical components of both freshwater and marine aquaria. Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance. Furthermore, aquarium filters are necessary to support life as aquaria are relatively small, closed volumes of water compared to the natural environment of most fish.
In functional programming, filter is a higher-order function that processes a data structure (usually a list) in some order to produce a new data structure containing exactly those elements of the original data structure for which a given predicate returns the boolean value true.
Filtering in the context of large eddy simulation (LES) is a mathematical operation intended to remove a range of small scales from the solution to the Navier-Stokes equations. Because the principal difficulty in simulating turbulent flows comes from the wide range of length and time scales, this operation makes turbulent flow simulation cheaper by reducing the range of scales that must be resolved. The LES filter operation is low-pass, meaning it filters out the scales associated with high frequencies.
A filter is a computer program or subroutine to process a stream, producing another stream. While a single filter can be used individually, they are frequently strung together to form a pipeline.
Some operating systems such as Unix are rich with filter programs. Windows 7 and later are also rich with filters, as they include Windows PowerShell. In comparison, however, few filters are built into cmd.exe (the original command-line interface of Windows), most of which have significant enhancements relative to the similar filter commands that were available in MS-DOS. OS X includes filters from its underlying Unix base but also has Automator, which allows filters (known as "Actions") to be strung together to form a pipeline.
FILTER was a seasonal American music and off-beat entertainment magazine which was founded in 2002. It featured commentary and photos of up-and-coming musicians and filmmakers ranging from actors to writer-directors. Each season's (Winter, Spring, Summer, Fall, and Holiday) issue highlighted a reasonably well-known cover artist while also taking a look at smaller artists under the heading "Getting to Know". The magazine also included reviews of forthcoming albums and DVDs.
With the tagline "Good music will prevail", the publication aimed to bring indie music to the forefront through its reporting while also highlighting established artists in long-form interviews. The magazine used to contain a "PSSST!" compilation with each issue.
FILTER was published by Alan Miller and Alan Sartirana. Its editor-in-chief was Pat McGuire, its associate editor was Breanna Murphy and its layout designer was Melissa Simonian.
FILTER also had a marketing arm which operated independently of the print publication. The magazine started a seasonal festival Culture Collide, now produced by founder Alan Miller and Collide after Miller and Sartirana parted ways amicably in 2014, with Sartirana, McGuire, and Simonian going on with much of the FILTER staff to found FLOOD Magazine, a quarterly entertainment publication.
In signal processing, a filter is a device or process that removes some unwanted components or features from a signal. Filtering is a class of signal processing, the defining feature of filters being the complete or partial suppression of some aspect of the signal. Most often, this means removing some frequencies and not others in order to suppress interfering signals and reduce background noise. However, filters do not exclusively act in the frequency domain; especially in the field of image processing many other targets for filtering exist. Correlations can be removed for certain frequency components and not for others without having to act in the frequency domain.
There are many different bases of classifying filters and these overlap in many different ways; there is no simple hierarchical classification. Filters may be:
- linear or non-linear
- time-invariant or time-variant, also known as shift invariance. If the filter operates in a spatial domain then the characterization is space invariance.
- causal or not-causal: depending if present output depends or not on "future" input; of course, for time related signals processed in real-time all the filters are causal; it is not necessarily so for filters acting on space-related signals or for deferred-time processing of time-related signals.
- analog or digital
- discrete-time (sampled) or continuous-time
- passive or active type of continuous-time filter
- infinite impulse response (IIR) or finite impulse response (FIR) type of discrete-time or digital filter.
Filter is an American industrial rock group formed in 1993 in Cleveland by singer Richard Patrick and guitarist/programmer Brian Liesegang. The band was formed after Patrick desired to start his own band after leaving Nine Inch Nails as their touring guitarist. Their debut album, Short Bus, was released in 1995, and ended up going platinum, selling over one million copies, largely due to the success of the band's single " Hey Man Nice Shot." After the album, the band would go through the first of many line-up changes, leaving Patrick as the only consistent member across all music releases.
After Liesegang's departure in 1997, Patrick recorded a follow up album with the Short Bus touring band members, who became full-time members thereafter. The resulting effort, Title of Record, also went platinum, off the success of the song " Take a Picture", in 1999. A third album, The Amalgamut, was released in 2002 with the same members, though sales stalled with Patrick checking into rehab after years of heavy alcohol and drug abuse just as touring for the album had began. The band went into hiatus while Patrick went to rehab, and then formed a new band, Army of Anyone, which released one self-titled album. After Army of Anyone went into hiatus, Patrick returned to Filter, releasing Anthems for the Damned in 2008, The Trouble with Angels in 2010, and The Sun Comes Out Tonight in 2013, with a revolving door of different musicians. A seventh studio album, Crazy Eyes, recorded with Patrick and another entirely new lineup, was released on April 8, 2016.
A video filter is a software component that is used to decode audio and video. Multiple filters can be used in a filter chain, in which each filter receives input from its previous-in-line filter upstream, processes the input and outputs the processed video to its next-in-line filter downstream. Such a configuration can be visualized in a filter graph.
With regards to video encoding three categories of filters can be distinguished:
- prefilters: used before encoding
- intrafilters: used while encoding (and are thus an integral part of a video codec)
- postfilters: used after decoding
Usage examples of "filter".
Did the tractors clog with aeroplankton in their air filters and carburetors?
And thanks to the aeroplankton, everyone now had to own, and wear during the aeroplankton storms, filter-masks conveniently designed to filter out the microorganism and forty-seven varieties of industrial pollutants.
Cherry delivered his beer, Arian sat quietly watching people filter in.
Tiny bright red bubbles roiled up from his exposed larynx, each prismatically ashimmer with filtered sunlight, a hundred miniature rainbows dipped in blood.
He filters and trickles through the dense social body in every possible direction, and issues forth at last the same virginal water drop.
Once a year, all the barons traveled to the Dulce facility to have their blood filtered and their autoimmune systems boosted.
They ate on the stoep in golden sunshine that filtered through the bougainvillaea creeper.
Somehow-though not from Celia, who kept her own counsel-a report of her encounter with Eli Camperdown filtered through the company.
She damped down the carburetion filter until all five engines were running in harmony.
Any coloured residue which may be left is generally organic matter: it is filtered off, calcined, and any copper it contains is estimated colorimetrically.
The residue contains the antimony as antimonate of soda, and is dissolved off the filter with hot dilute hydrochloric, with the help of a little tartaric, acid.
Cecil dropped his cigarette butt and crushed the biodegradable filter and detoxifier with his shoe.
London dawn had come, the place was full of a chilly grey light that filtered round the edges of the window blinds.
And even then they filtered tinny and absurd through the lid, even as Isaac fell into the stream of warm, faecal water, and staggered along the tunnels following the other survivors.
Type Ia supernovas as observed through blue and violet filters, and found significant differences in falloff times of the light from one object to another, from falloff in about 10 days to over 30 days.