reciprocal filter
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Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… … Wikipedia
All-pass filter — An all pass filter is an electronic filter that passes all frequencies equally, but changes the phase relationship between various frequencies. It does this by varying its propagation delay with frequency. Generally, the filter is described by… … Wikipedia
Raised-cosine filter — The raised cosine filter is a particular electronic filter, frequently used for pulse shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its name stems from the fact that the non zero portion of the… … Wikipedia
Close-up filter — Set of three close up lenses Typical close up lens … Wikipedia
Color temperature — The CIE 1931 x,y chromaticity space, also showing the chromaticities of black body light sources of various temperatures (Planckian locus), and lines of constant correlated color temperature. Color temperature is a characteristic of visible light … Wikipedia
Seismic Unix — is an open source seismic utilities package supported by the Center for Wave Phenomena (CWP) at the Colorado School of Mines (CSM).Infobox Software name = Seismic Unix caption = Velocity Analysis with SU developer = [http://www.cwp.mines.edu/… … Wikipedia
Mired — Close up of the Planckian locus in the CIE 1960 color space, with the isotherms in mireds. Note the even spacing of the isotherms when using the reciprocal temperature scale. The even spacing of the isotherms on the locus implies that the mired… … Wikipedia
Reflection high energy electron diffraction — (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that rely also… … Wikipedia
radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… … Universalium
Bilinear transform — The bilinear transform (also known as Tustin s method) is used in digital signal processing and discrete time control theory to transform continuous time system representations to discrete time and vice versa. The bilinear transform is a… … Wikipedia
3DNow! — is the trade name of a multimedia extension created by AMD for its processors, starting with the K6 2 in 1998. It is an addition of SIMD instructions to the traditional x86 instruction set, designed to improve a CPU s ability to perform the… … Wikipedia
