I need to take a log power spectrum of each DFD frame (positive values only), but I am unsure how to do this. I would also like the option to plot each frame as a function of time. Each frame will subsequently be passed to a Spectral Flux function within my short-term analysis function.
I've searched the documentation and there seems to be a few permutations of the term 'Power Spectrum' including Power Spectrum 'Density' 'Estimator', which has confused me even more.
Is there an equation I can follow to do this, or a Matlab function, but not a function that does all the FFT, windowing, etc. for you.