signal conversion

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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

• CONVERSION — Selon sa signification étymologique, conversion (du latin, conversio ) signifie retournement, changement de direction. Le mot sert donc à désigner toute espèce de retournement ou de transposition. C’est ainsi qu’en logique le mot est employé pour …   Encyclopédie Universelle

• 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/ bruit — Rapport signal sur bruit Le rapport signal sur bruit désigne la qualité d une transmission d information par rapport aux parasites. Ce concept est utilisé pour désigner un équipement électronique, ce rapport s obtient alors en comparant le signal …   Wikipédia en Français

• Signal conditioning — In electronics, signal conditioning means manipulating an analogue signal in such a way that it meets the requirements of the next stage for further processing. For example, the output of an electronic temperature sensor, which is probably in the …   Wikipedia

• Signal sonore — Son (physique) Pour les articles homonymes, voir Son. Le son est une onde produite par la vibration mécanique d un support fluide ou solide et propagée grâce à l élasticité du milieu environnant sous forme d ondes longitudinales. Par extension… …   Wikipédia en Français

• Signal transduction — A basic process in molecular cell biology involving the conversion of a signal from outside the cell to a functional change within the cell. A signal (such as a hormone or neurotransmitter) interacts with a receptor on the cell surface; this… …   Medical dictionary

• Sampling (signal processing) — Signal sampling representation. The continuous signal is represented with a green color whereas the discrete samples are in blue. In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the …   Wikipedia

• Sample rate conversion — is the process of converting a (usually digital) signal from one sampling rate to another, while changing the information carried by the signal as little as possible. When applied to an image, this process is sometimes called image scaling.Sample …   Wikipedia

• Television standards conversion — is the process of changing one type of TV system to another. The most common is from NTSC to PAL or the other way around. This is done so TV programs in one nation may be viewed in a nation with a different standard. The TV video is fed through a …   Wikipedia

• Direct-conversion receiver — A direct conversion receiver (DCR), also known as homodyne, synchrodyne, or zero IF receiver, is a radio receiver design that demodulates the incoming radio signal using synchronous detection driven by a local oscillator whose frequency is… …   Wikipedia