How can i find the fundamental frequency of the signal using the autocorrelation function?

For example i create a signal that contains 250Hz frequency and assuming that we don't know the frequency of that signal, and our expected frequency must lie between 100-400 hertz, how can autocorrelation function xcorr() help me find the fundamental frequency which is equal to 250 hertz?

Answer 1

[Constantino Carlos Reyes-Aldasoro]

Have you considered using the Fourier Transform to convert from time domain to Frequency domain? There you can find the highest peak and that would correspond to the fundamental frequency.