Find "base" frequency of pulse wave I have some samples that are read from a square pulse wave and I'm looking for a way to find the characteristics of this wave.

It's a pulse wave, let $T_1$ be the non-pulse duration and $T_2$ to be the pulse duration, usually $T_1$ is bigger than $T_2$.

I would like to know the base frequency, e.g., the frequency that includes $T_1+T_2$.
Can I do this using an FFT?
Of course. Sample a few cycles, window, and do a FFT. The highest peak will be found at the base frequency (T1+T2) of your wave. With "spectral reassignment" you might get more precise results.