I.I.T: Slate Digital - VBC - FG RED

Hi any fft analyzer with the correct setup to feed it would do, this particular one is a vst plugin analyzer/test module given to me by its developer so its a little bit more special. But none the less if I'm not to use that, I like to use voxengos SPAN! (On High Ress)

Edit: Graphs are the result of test protocols fedding the module and then leading into the FFT
 
alright thanks. if I use SPAN, what kind of signal would I have to feed it in order to see the frequency and THD response. sorry for my ignorance.