aliasing frequency

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• Aliasing — This article applies to signal processing, including computer graphics. For uses in computer programming, please refer to aliasing (computing). In statistics, signal processing, computer graphics and related disciplines, aliasing refers to an… …   Wikipedia

• aliasing — ali·as·ing (aґle əs ing) 1. introduction of an artifact or error in sampling of a periodic signal when the sampling frequency is too low to properly capture the signal. 2. in pulsed Doppler ultrasonography, an artifact occurring when the… …   Medical dictionary

• Frequency synthesizer — A frequency synthesizer is an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator. They are found in many modern devices, including radio receivers, mobile telephones, radiotelephones, walkie… …   Wikipedia

• aliasing — n. (Computers) process through which curved lines appear to have a jagged edge due to low end graphics capabilities; creation of a false frequency when sampling audio data (caused by a low sampling rate) …   English contemporary dictionary

• aliasing — noun 1》 Physics & Telecommunications the misidentification of a signal frequency. 2》 Computing the use of aliases to designate files, commands, etc. 3》 Computing the distortion of a reproduced image so that curved or inclined lines appear… …   English new terms dictionary

• Spatial anti-aliasing — In digital signal processing, spatial anti aliasing is the technique of minimizing the distortion artifacts known as aliasing when representing a high resolution image at a lower resolution. Anti aliasing is used in digital photography, computer… …   Wikipedia

• Anti-aliasing — In digital signal processing, anti aliasing is the technique of minimizing the distortion artifacts known as aliasing when representing a high resolution signal at a lower resolution. Anti aliasing is used in digital photography, computer… …   Wikipedia

• Anti-aliasing filter — An anti aliasing filter is a filter used before a signal sampler, to restrict the bandwidth of a signal to approximately satisfy the sampling theorem. Since the theorem states that unambiguous interpretation of the signal from its samples is… …   Wikipedia

• Nyquist frequency — Not to be confused with Nyquist rate. Frequencies above ƒs/2 (the Nyquist frequency) have an alias below ƒs/2, whose value is given by this graph. ƒs/2 is also called folding frequency, because of the symmetry between 0 and ƒs. The Nyquist… …   Wikipedia

• Negative frequency — The concept of negative and positive frequency can be as simple as a wheel rotating one way or the other way.[citation needed] A signed value of frequency indicates both the rate and direction of rotation.[citation needed] The rate is expressed… …   Wikipedia

• Multisample anti-aliasing — (MSAA) is a type of anti aliasing, a technique used in computer graphics to improve image quality. Contents 1 Definition 2 Description 3 Advantages 4 Disadvantages …   Wikipedia