Aliasing in adc

Each frame may capture the wheels in a different position, so depending on how many rotations the wheels complete between frames, they might actually appear to be rotating backward as you watch the video! This effect is known as aliasing.

1. What is aliasing effect in sampling?
2. What is meant by the term aliasing?
3. What is aliasing and why does it occur?
4. What is aliasing in Nyquist?

What is aliasing effect in sampling?

Aliasing is an undesirable effect that is seen in sampled systems. When the input frequency is greater than half the sample frequency, the sampled points do not adequately represent the input signal. Inputs at these higher frequencies are observed at a lower, aliased frequency.

What is meant by the term aliasing?

ali·​as·​ing ˈā-lē-ə-siŋ ˈāl-yə- : an error or distortion created in a digital image that usually appears as a jagged outline. We commonly observe aliasing on television.

What is aliasing and why does it occur?

Aliasing occurs when an oscilloscope does not sample the signal fast enough to construct an accurate waveform record. The signal frequency is misidentified, and the waveforms displayed on an oscilloscope become indistinguishable. Aliasing is basically a form of undersampling.

What is aliasing in Nyquist?

When a component of the signal is above the Nyquist, a sampling error occurs that is called aliasing. Aliasing “names” a frequency above Nyquist by an “alias” the same distance below Nyquist. Sinusoidal signal at 1.3 times Nyquist before sampling into pixels.