[問題] power spectrum
我看Fractals, Chaos, Power Laws這本書,
書中有一段敘述我不知道是如何導出來的:
...power spectrum P(f) with asymptotic f^-3 dependence,
obtained from data collected over a time period T,
might look like this:
T^4 * f
P(f) = ----------------
1 + (T*f)^4
請問這個式子是怎麼導出來的呢?
謝謝
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