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Signal-to-Noise Ratio: Difference between revisions
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Signal-to-noise ratio is sometimes used informally to refer to the ratio of useful information to false or irrelevant data in a conversation or exchange. For example, in online discussion forums and other online communities, off-topic posts and spam are regarded as "noise" that interferes with the "signal" of appropriate discussion | Signal-to-noise ratio is sometimes used informally to refer to the ratio of useful information to false or irrelevant data in a conversation or exchange. For example, in online discussion forums and other online communities, off-topic posts and spam are regarded as "noise" that interferes with the "signal" of appropriate discussion. | ||
In studies of how [[Higher Sensory Perception]] works, it has long been held that mental images are formed first, and only then do estimations of their meaning take place. | |||
But, and very briefly, in signal-to-noise theory when applied to the human nervous systems: | |||
(1) Signals first come in | |||
(2) The signals are then, in pre-conscious processing, translated into information-meaning categories, usually by some kind of comparing with meanings already stored in memory banks | |||
(3) If memory-meanings comparable to the signals are found, then mental images can be manufactured and rise into consciousness | |||
(4) However, if no comparable or comparative memory-meanings are available, then the pre-conscious systems segue over to the next best memory-meanings – and mental perceptions and images are then constructed in the light of those | |||
(5) When this happens, the resulting mental-image impressions can be at some distance from the real import of the original signals, but can carry bits of information contained in the original signals | |||