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• Signal processing — is an area of systems engineering, electrical engineering and applied mathematics that deals with operations on or analysis of signals, in either discrete or continuous time. Signals of interest can include sound, images, time varying measurement …   Wikipedia

• Source separation — problems in digital signal processing are those in which several signals have been mixed together and the objective is to find out what the original signals were. The classical example is the cocktail party problem , where a number of people are… …   Wikipedia

• Signal lamp — training during World War II. A signal lamp (sometimes called an Aldis lamp, named after Arthur C. W. Aldis who invented a widely used design) is a visual signaling device for optical communication (typically using Morse code). Modern signal… …   Wikipedia

• Signal integrity — or SI is a measure of the quality of an electrical signal. In digital electronics, a stream of binary values is represented by a voltage (or current) waveform. Over short distances and at low bit rates, a simple conductor can transmit this with… …   Wikipedia

• Source-synchronous — clocking refers to the technique of sourcing a clock along with the data. Specifically, the timing of unidirectional data signals is referenced to a clock (often called the strobe) sourced by the same device that generates those signals, and not… …   Wikipedia

• Signal-flow graph — A signal flow graph (SFG) is a special type of block diagram[1] and directed graph consisting of nodes and branches. Its nodes are the variables of a set of linear algebraic relations. An SFG can only represent multiplications and additions.… …   Wikipedia

• Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… …   Wikipedia

• Signal Corps in the American Civil War — U.S. Army Signal Corps station on Elk Mountain, Maryland, overlooking the Antietam battlefield. The Signal Corps in the American Civil War comprised two organizations: the U.S. Army Signal Corps, which began with the appointment of Major Albert J …   Wikipedia

• Signal transduction — In biology, signal transduction refers to any process by which a cell converts one kind of signal or stimulus into another. Most processes of signal transduction involve ordered sequences of biochemical reactions inside the cell, which are… …   Wikipedia

• Signal 1 — Infobox Radio station name = Signal One airdate = 5 September 1983 frequency = 96.4 MHz, 96.9 MHz, 102.6 MHz, DAB share = 13.9% share as of = September 2007 share source = [cite web|url=http://www.rajar.co.uk/listening/quarterly… …   Wikipedia

• Signal generator — A signal generator, also known variously as a test signal generator, function generator, tone generator, arbitrary waveform generator, digital pattern generator or frequency generator is an electronic device that generates repeating or non… …   Wikipedia