MATLAB: RMS of non sinusoidal wave

rms;non sinusoidal wave

I have a signal sampled at 5000 samples per second . and I have 5 second .please tell me how yo get the RMS of non sinusoidal wave by matlab

I knew that for sinusoidal wave we do this

ac_signal = YourSignal - mean(YourSignal(:));
rms = sqrt( mean(ac_signal.^2) );

You get it just the way you calculated it in your ‘rms’ assignment. It’s the square root of the mean of the squared magnitude of the signal.

I gave an answer today that required an RMS calculation.

You can make a throw-away function for RMS:

RMS = @(x) sqrt(mean(x.^2));

And then to answer your question:

signal = signal / RMS(signal);

ac_signal = YourSignal - mean(YourSignal(:));
rms = sqrt( mean(ac_signal.^2) );