aliasing - Übersetzung nach Englisch
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aliasing - Übersetzung nach Englisch

DIFFERENT CONTINUOUS SIGNALS BECOMING INDISTINGUISHABLE WHEN SAMPLED
Spatial aliasing; Sawtooth distortion; Prealiasing; Postaliasing; Temporal aliasing; Folding (signal processing); Spectral folding
  • s}}/2,}} whose value is given by this graph.
  • Fig.3: The black dots are aliases of each other. The solid red line is an <u>example</u> of amplitude varying with frequency. The dashed red lines are the corresponding paths of the aliases.
  • Illustration of 4 waveforms reconstructed from samples taken at six different rates. Two of the waveforms are sufficiently sampled to avoid aliasing at all six rates. The other two illustrate increasing distortion (aliasing) at the lower rates.
  • s}}}}
  • Fig.4: The Fourier transform of music sampled at 44,100 samples/sec exhibits symmetry (called "folding") around the Nyquist frequency (22,050&nbsp;Hz).
  • Fig.2 '''Upper left:''' Animation depicts a sequence of sinusoids, each with a higher frequency than the previous ones.  These "true" signals are also being sampled (blue dots) at a constant frequency/rate, <math>f_s.</math><br>

'''Upper right:''' The <u>continuous</u> Fourier transform of the sinusoid (not the samples). The single non-zero component, depicting the actual frequency, means there is no ambiguity.<br>

'''Lower right:''' The <u>discrete</u> Fourier transform of just the available samples.  The presence of two components means the samples can fit at least two different sinusoids, one of which is the true frequency (upper-right).<br>

'''Lower left:''' Using the same samples (now in red), the default reconstruction algorithm produces the lower-frequency sinusoid.

aliasing         

общая лексика

ступенчатость [линий]

в компьютерной графике - нежелательные визуальные эффекты ступенчатости, зубчатости изображения на кривых линиях, окружностях или прямых, расположенных не параллельно краям экрана. Возникают при недостаточном разрешении монитора, малой частоте смены кадров, а также при многократном увеличении растрового изображения

совмещение имен

ситуация, при которой один и тот же объект доступен под разными именами

сейсмология

появление зеркальных частот

Смотрите также

anti-aliasing; artifact; alias

spectral folding         

общая лексика

спектральное наложение

derived type         
WIKIMEDIA DISAMBIGUATION PAGE
Type aliasing; Derived type (disambiguation)

общая лексика

производный тип

сложный тип данных, определенный через другие (базовые или производные) типы

Смотрите также

data type; subtype

Definition

сглаживание
ср.
Процесс действия по знач. глаг.: сглаживать.

Wikipedia

Aliasing

In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable (or aliases of one another) when sampled. It also often refers to the distortion or artifact that results when a signal reconstructed from samples is different from the original continuous signal.

Aliasing that occurs in signals sampled in time, for instance in digital audio or the stroboscopic effect, is referred to as temporal aliasing. Aliasing in spatially sampled signals (e.g. moiré patterns in digital images) is referred to as spatial aliasing.

Aliasing is generally avoided by applying low-pass filters or anti-aliasing filters (AAF) to the input signal before sampling and when converting a signal from a higher to a lower sampling rate. Suitable reconstruction filtering should then be used when restoring the sampled signal to the continuous domain or converting a signal from a lower to a higher sampling rate. For spatial anti-aliasing, the types of anti-aliasing include fast approximate anti-aliasing (FXAA), multisample anti-aliasing, and supersampling.

Übersetzung von &#39aliasing&#39 in Russisch