NEED HELP, Need to find the period for a signal

Hi,

I have the following signal:

I need to write a Matlab code to find the period T.

And plot the signal for 0 <= t <= T.

Can anyone Help?

Thank You in Advance!!

Answer 1

[Antoni Garcia-Herreros]

Hello Mohammad,

You could try something like this:

clear all
ts=0.001;
t=0:ts:0.6;
y=5*sin(8*pi*t)+6*sin(16*pi*t);

[p,peaks]=findpeaks(y,'MinPeakProminence',(max(y)-min(y))/4);
Period=mean([diff(peaks(1:2:length(peaks))), diff(peaks(2:2:length(peaks)))])*ts

Or you could work your way arround using autocorrelation