I think it was my mistake somehow, I used hexdump to see the values of the FFT results and seemed like the differences were in the LSB digits and hence different rounding perhaps. I was running the two code on two different laptops, although entirely identical in terms of hardware spec, ubuntu and gnuradio installation and I was expecting them to produce identical results as well. Running the two codes on the same machine with two different gnuradio versions produced identical FFT results. So I guess this case is closed.
And thanks for adding me to the reporters list... --Alex On Tue, May 21, 2013 at 3:45 AM, Martin Braun (CEL) <[email protected]>wrote: > On Sun, May 19, 2013 at 02:57:35PM -0400, Alex Dusowitz wrote: > > I guess I can't use the bug tracker since I'm not a contributor! Am I > right? > > Although I created an account ("Alexdu") in case I can be added by you. > > In case you couldn't already, now you can post. > > > In the mean time, attached are 4 files, the FFT input, a simple test > python > > code that takes the input and write the FFT result into an output file. > The > > outputs are different when I run the code in 3.2.2 and 3.6.4! > > > > > > Also I couldn't relate this to FFT shift, I tried with both cases and > still the > > results were different. FFT and IFFT wouldn't change this either. > > Have you tried explicitly setting the window? I faintly remember seeing > something like this a while ago... there was a weird default value for > window somewhere (not rectangular). > > MB > > -- > Karlsruhe Institute of Technology (KIT) > Communications Engineering Lab (CEL) > > Dipl.-Ing. Martin Braun > Research Associate > > Kaiserstraße 12 > Building 05.01 > 76131 Karlsruhe > > Phone: +49 721 608-43790 > Fax: +49 721 608-46071 > www.cel.kit.edu > > KIT -- University of the State of Baden-Württemberg and > National Laboratory of the Helmholtz Association > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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