How do I calculate the Spectral Entropy of a signal in MATLAB ? I know the basic steps but it would be nice if someone can help,
- Calculate the power spectrum of the signal using FFT command in MATLAB.
- Calculate the Power Spectral Density using the power spectrum or using any other technique.
- Normalize the Power Spectral Density between $[0, 1]$, so that it can be treated as a probability density function $p_i $.
- Calculate the Entropy $H(s) = -\sum p_i\log_2\left(p_i\right)$