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  • October 3, 2025 at 9:16 am #13369
    alexander_s
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    For a given time parameter T and a signal f(t), define the autocorrelation as the time average

    B_T [f] = <f(t) f(t – T)>.

    Then, setting T = 0 gives you dispersion (we assume <f> =0), and the behaviour of B_T for other values of T shows how fast the signal “forgets” its previous value.

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