Estimate Autocorrelation using Python

Question

I would like to perform Autocorrelation on the signal shown below. The time between two consecutive points is 2.5ms (or a repetition rate of 400Hz).

Answer 1

The statsmodels package adds a autocorrelation function that internally uses np.correlate (according to the statsmodels documentation).

See: http://statsmodels.sourceforge.net/stable/generated/statsmodels.tsa.stattools.acf.html#statsmodels.tsa.stattools.acf