SNR (theory), signal noise

Good day,

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.

Thank you

[Adam Danz]

To address your first question, see the "More About" section of the snr documentation.

Answer 1

[Chaitanya Mallela]

Refer the documentation here to know about the snr function. The SNR ratio of this function is representated in dBc or dB. More the variance in the signal, more the Noise Power and SNR would be less.