signal-to-noise ratio

symbol: RS/N
initialisms: SNRdB, S/N, SNR
https://doi.org/10.1351/goldbook.08282
Power of signal divided by power of noise.
Notes:
  1. When signal and noise are measured across the same impedance, SNR is often calculated as the root-mean-squared amplitude of the signal divided by the root-mean-squared amplitude of the noise.
  2. The value of signal-to-noise ratio may be expressed in decibel (SNRdB) as ten times the logarithm to base 10 of signal-to-noise ratio.
  3. Initialisms should not be used to denote a quantity in expressions and formulae. RS/N is recommended.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 672 [Terms] [Paper]
Citation: 'signal-to-noise ratio' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08282 RIS BibTex EndNote
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