What is the best method to do frequency analysis on a time based signa, spectrum block?

I need to get the frequency spectrum of a time series signal in simulink. I tried spectrum and fft and it seems they cannot do continuous data, makes sense. so I bought real time desktop because the help says I should be able to use spectrum block. When I look in the library for spectrum block it is not there. How do I find it or is there a better way?

Answer 1

[Massimo Zanetti]

Try fourier transform (continuous) https://it.mathworks.com/help/symbolic/fourier.html