Power

Using the log power spectrum as features for a Classifier

Using the log power spectrum as features for a Classifier
  1. What is the use of power spectrum?
  2. How do you calculate power spectrum in FFT?

What is the use of power spectrum?

The power spectrum is useful for determining the degree of noise that is associated with the signal and also deciding on appropriate sampling rates (following the guidelines of Shannon's sampling theorem). The power spectrum analysis graphically indicates the frequency content of the PV signal.

How do you calculate power spectrum in FFT?

To get the PSD from your FFT values, square each FFT value and divide by 2 times the frequency spacing on your x axis.

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