SNR (theory), signal noise
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In analog and digital communications, signal-to-noise ratio, is a measure of signal strength relative to background noise.
So, I'd to ask, when I use the built function snr(signal), how the function "interpret" or "detect" what is the noise of the signal ?
Second, can we use the snr score ( score=snr(signal) ) in order to say if the signal is "regular" or not. Cause, I understood that something that is not regular is considering as "noise" and then we'll receive a low score.