Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
sonograph
The spectrogram is the result of calculating the frequency spectrum of winowed frames of a compound signal. It is a three-dimensional plot of the energy of the frequency content of a signal as it changes over time.