Filter may refer to:
In chemistry, engineering, or household usage, a device to separate mixtures. See:
In optics and photography, a device to remove, or to enhance, certain ranges of wavelengths (colors) of light. See:
In signal-processing applications (such as telecommunications, music, and picture processing): a mathematical algorithm, or an electrical or mechanical device, to modify the contents of signals and to extract their salient features. See:
See filtering problem (stochastic processes) for the mathematical formalism.
"Filter Device, Especially Air Filter for an Internal Combustion Engine" in Patent Application Approval Process
Aug 15, 2013; By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Muenkel, Karlheinz...
Filters a nutshell: spreadsheet promotes intuitive feel: using an online spreadsheet, designers can derive the most common types of filters from a universal-filter-transfer function.(CYPRESS MICROSYSTEMS)
Jun 09, 2005; When almost any electronic system passes a certain level of complexity, it requires some sort of filtering--often several...