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## Homework Statement

I have some registration of sound gathered by hydrophone. Next I have created a power spectral density (dB re 1 Pa

^{^2}/Hz) vs frequency plot (semilog in matlab). And now I want to find spectral slope in dB/octave (one octave is log

_{2}(f2/f1).

I suppose that I should calculate the difference between two PSD points (max and min) and then divide this value by amount of octaves estimated based on the mentioned formula?

Could you if I'm right? Or mby there should use some different formula?