Hey James I thought of the “to workspace” sink. I am not to familiar to write from Simulink to the workspace, but I will give it a go! Thanks for the help.
Out of curiosity, if I have both halves of the symmetric FFT, what would be an application do to another FFT? I have written an Matlab script to play around with this idee. When I run the script, the the FFT of an FFT gives me a time domain signal, but the result has a larges amplitude. When I do a 3rd FFT I get the frequency domain again, and it is also amplified. It is just something that I picked up. Heystek > On 23 Apr 2020, at 11:51, James Smith <jsm...@ska.ac.za> wrote: > > Hello Heystek, > > You can probably use a "to workspace" sink, then you'll be able to display > the data however you want in some matlab code once the simulation is finished > running. > > Canonically, just applying an FFT to frequency-domain data will get you back > into the time domain, multiplied by some scaling factor. You need both halves > of the symmetric FFT though, so the output of e.g. the fft_wideband_real > wouldn't be meaningful to apply another FFT to it. > > Regards, > James > > > > > On Thu, Apr 23, 2020 at 9:40 AM Heystek Grobler <heystekgrob...@gmail.com > <mailto:heystekgrob...@gmail.com>> wrote: > Good day Casperites > > I have an interesting question. I am using a FFT in simulink for the use in > a spectrometer design. I want to test the output of the FFT by using some > kind of scope. Simulink only has spectrum scope, that would be perfect, but > the scope does a second FFT on the signal. The other option is a vector > scope, but that does not give the result that I am looking for. > > Does anyone have a suggestion on how I can see the results of the FFT in > simulink? > > Then I have another question. What would be expected if I do a FFT on a FFT? > As far as I can figure out, the FFT of the FFT should just be time reversed? > > Thanks for the help! > > Heystek > > -- > You received this message because you are subscribed to the Google Groups > "casper@lists.berkeley.edu <mailto:casper@lists.berkeley.edu>" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu > <mailto:casper%2bunsubscr...@lists.berkeley.edu>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/62AFF5A0-0980-4FB7-8CB8-C053590F655E%40gmail.com > > <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/62AFF5A0-0980-4FB7-8CB8-C053590F655E%40gmail.com>. > > -- > You received this message because you are subscribed to the Google Groups > "casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu > <mailto:casper+unsubscr...@lists.berkeley.edu>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG67D373fmnXJ7Os7jrBGJyTbvRA835okUMO%2B0x8hTT%3DGzyKrg%40mail.gmail.com > > <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG67D373fmnXJ7Os7jrBGJyTbvRA835okUMO%2B0x8hTT%3DGzyKrg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/8064F663-15CE-4C42-B13A-9AC9ABF82703%40gmail.com.
