- noun a very small error in a video signal
- noun a very small error in a digital version of an analog signal
- An unexpected signal, component, or result, which is unrelated to the studied phenomenon. For example, an incorrect reading of an analog indicator caused by the viewer observing at an improper angle.
- Unintended imperfections in signals or images due to software or hardware limitations. Seen, for example, as snow or spots.
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