signal-to-noise ratio - definição. O que é signal-to-noise ratio. Significado, conceito
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O que (quem) é signal-to-noise ratio - definição

MEASURE COMPARING THE LEVEL OF A SEARCHED SIGNAL TO THE LEVEL OF BACKGROUND NOISE
Signal level; Signal to noise ratio; Signal to Noise ratio; Signal-To-Noise Ratio; Signal to noise; Signal to noise level; S/N ratio; Desired-to-undesired ratio; Signal-to-noise; Optical signal-to-noise ratio; Signal-noise ratio; S/n ratio; Signal-to-noise-ratio; Signal:noise; Signal-to-Noise; Signal/noise ratio; Signal to noise ratio (image processing); Signal-to-noise ratio (image processing); Signal to Noise Ratio; Signal-to-Noise Ratio

signal-to-noise ratio         
1. <communications> (SNR, "s/n ratio", "s:n ratio") "Signal" refers to useful information conveyed by some communications medium, and "noise" to anything else on that medium. The ratio of these is usually expressed logarithmically, in decibels. 2. <networking> The term is often applied to Usenet newsgroups though figures are never given. Here it is quite common to have more noise (inappropriate postings which contribute nothing) than signal (relevant, useful or interesting postings). The signal gets lost in the noise when it becomes too much effort to try to find interesting articles among all the crud. Posting "noise" is probably the worst breach of netiquette and is a waste of bandwidth. [Jargon File] (1996-01-29)
Signal-to-noise ratio         
Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels.
signal-to-noise ratio         
¦ noun the ratio of the strength of an electrical or other signal carrying information to that of unwanted interference, generally expressed in decibels.

Wikipédia

Signal-to-noise ratio

Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise.

SNR, bandwidth, and channel capacity of a communication channel are connected by the Shannon–Hartley theorem.