Signal-to-noise ratio  

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Signal-to-noise ratio (often abbreviated 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. It 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. While SNR is commonly quoted for electrical signals, it can be applied to any form of signal (such as isotope levels in an ice core or biochemical signaling between cells).


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Unless indicated otherwise, the text in this article is either based on Wikipedia article "Signal-to-noise ratio" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic. See Art and Popular Culture's copyright notice.

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