Aliasing
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In digital signal processing, aliasing is a phenomenon that a reconstructed signal from samples of the original signal contains low frequency components that are not present in the original one. This is caused when, in the original signal, there are components at frequency exceeding a certain frequency called Nyquist frequency, f_s / 2, where f_s is the sampling frequency (undersampling). This is because typical reconstruction methods use low frequency components while there are a number of frequency components, called aliases, which sampling result in the identical sample. It also often refer
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- Commons category
- Aliasing
- Stack Exchange tag
- stackoverflow.com/tags/aliasing
- different from
- aliasing
- maintained by WikiProject
- WikiProject Mathematics
- has cause
- sampling
- handled, mitigated, or managed by
- Q604241
- opposite of
- anti-aliasing
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Article · Polski
Aliasing – nieodwracalne zniekształcenie sygnału w procesie próbkowania wynikające z niespełnienia założeń twierdzenia o próbkowaniu. Zniekształcenie objawia się obecnością w wynikowym sygnale składowych o błędnych częstotliwościach (aliasów).
Abstract from DBpedia / Wikipedia · CC BY-SA