Any momentary occurrence of noise on a channel that significantly exceeds the normal noise peaks. Impulse noise is analyzed by counting the number of occurrences that exceed a threshold.
Pulse or pulses appearing at the output point of a data link, which were not transmitted at the input point. Impulse noises are usually caused by external electrical sources, such as lighting.
Artifact of video signal transmission, e. g. via satellite links. It may be suppressed by median filtering. Sparklies is the term for the specific form of impulse noise typical of marginal satellite reception. Synonyms: Sparkles