In this analysis we used power statistic for L1 in band 200.0-200.5 Hz (180 bins) over the entire S2 run. As can be seen from earlier plots this band is well behaved with respect to absence of visible artifacts and values of KS statistic.
For purposes of this analysis bin 1 is 200.0 Hz with successive bins in increments of 1/1800 Hz.
Instead of correlating raw power we used a logarithm of it as the expected distribution is exponential.
First we plot correlation of bins around bin 90. The correlation of 1.0 corresponds to bin 90 itself and is expected to be so. The two smaller values around it come from Hann window and are also expected. Note that other correlations are generally positive and reach values as high as 0.12.
Same plot but zoomed in Y axis
Here we adjusted the data by subtracting the median of each segment. Here is the plot of the medians:
Plot of correlations of adjusted data. Note that we see a similar structure to raw correlations but far correlations can be both positive and negative and are less than 0.07 in absolute value:
Same plot but zoomed in Y axis
Density plot
Plot of medians of the adjusted bins:
There does not appear to be a peak in bin 451. The correlation plot is the same:
