variance of white noise generated by awgn matlab

0
votes

I have try to add noise to a signal using awgn in matlab:

x % clean signal

x_noisy=awgn(x,10,'measured','db');

Can anybody tell me how to compute the standard deviation of the noise added here please? Thank you very much!

1
matlab

1 Answers

1
votes

Are you looking for something like that?

x % clean signal
x_noisy=awgn(x,10,'measured','db');
standard_deviation_of_noise = std(x-x_noisy)