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19:54 Dec 29, 2008
English to Italian translations [PRO] Tech/Engineering - Telecom(munications) Additional field(s): Electronics / Elect Eng
English term or phrase:aliasing
Definition from ATIS Telecom Glossary 2007: In any technology or process involving (a) sampling a signal, e.g., an electrical signal or (a series of images of) a moving subject; (b) processing, storing, or transmitting representations of the samples; and (c) replicating the original signal from the representations: the production of artifacts as a result of sampling at intervals too great to permit faithful replication of the original signal.
Example sentence(s):
Digital alias-free signal processing (DASP) is a technique for overcoming the problems of aliasing at extended frequency ranges. Based on non-uniform or randomised sampling techniques and the development of novel algorithms, it creates the capacity to suppress potential aliasing crucial for high frequency applications and to reduce the complexity of designs. Wiley
An example of aliasing can be seen in old movies, especially when watching wagon wheels on old Western films. Recall that occasionally the wheels appeared as if they going in reverse, even as the wagon would speed up. This phenomenon occurs as the rate of the wagon wheel's spokes spinning approaches the rate of the sampler (the camera operating at about 30 frames per second). National Instruments
The term aliasing refers to the distortion that occurs when a continuous time signal has frequencies larger than half of the sampling rate. The process of aliasing describes the phenomenon in which components of the signal at high frequencies are mistaken for components at lower frequencies. Sampling and Aliasing
Definition: Alias/Aliasing: Una forma di distorsione causata dall’utilizzo di una frequenza di campionamento troppo bassa per il tipo di segnale trattato.
Definition from Filmakers'TV: Alias/Aliasing: Una forma di distorsione causata dall’utilizzo di una frequenza di campionamento troppo bassa per il tipo di segnale trattato.
Example sentence(s):
Un effetto di aliasing è la classica “ruota che gira al contrario” nei film: la velocità di rotazione della ruota è molto maggiore del campionamento temporale del film (24 fotogramma/s), ed il risultato è la comparsa dell’ effetto di rotazione anomalo. - Filmakers' TV
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