The ratio of the amplitude of the desired signal to the amplitude of noise signals at a given point in time . [ JP1 ] Note 1: SNR is expressed as 20 times the logarithm of the amplitude ratio, or 10 times the logarithm of the power ratio. Note 2: SNR is usually expressed in dB and in terms of peak values for impulse noise and root-mean-square values for random noise . In defining or specifying the SNR, both the signal and noise should be characterized, e.g., peak-signal-to-peak-noise ratio, in order to avoid ambiguity.
SIGNAL TO NOISE RATIO (SNR)
Meaning of SIGNAL TO NOISE RATIO (SNR) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012