Signal to Noise Ratio Calculator

Signal to Noise Ratio Calculation


Signal to Noise Ratio Calculator is an online tool specially programmed to calculate how much a signal as meaningful information has been corrupted by noise as unwanted signal


Signal-to-noise ratio is also called as SNR or S/N, is defined as the ratio of signal power to the noise power corrupting the signal. The Signal to Noise Ratio (SNR) is the defining factor when it comes to quality of measurement. A high SNR guarantees clear acquisitions with low distortions and artifacts caused by noise. The better your SNR, the better the signal stands out, the better the quality of your signals, and the better you ability to get the results you desire. SNR measurement is commonly used in the field of science and engineering fields. A ratio higher than 1:1 indicates more signal than noise. While SNR is commonly quoted for electrical signals, it can be applied to any form of signal

How to Calculate Signal to Noise Ratio

Signal-to-noise ratio is defined as the power ratio between a signal and noise. It can be derived from the formula
SNR = Psignal/Pnoise = μ/σ
μ is the signal mean or expected value
σis the standard deviation of the noise