Try this: https://www.dropbox.com/s/7xsg4arx5h3gvah/spectrum.grc?dl=0
The integrate with decimation is what you want. Starting at 32 ksps with a 1024 length FFT length yields 31.25 vector/sec. Then an integrate with decimation by 32 averages down to 0.98 vector/sec. However when I try reading those back from the file, I'm not getting the 1 ksps I should be getting. I have to set that throttle at 8000 to get the proper update rate. Lou Adellain TSIAHINA wrote > Dear All, > > I'm new to Gnu Radio. I looked carefully to the doc and tutorials but > could > not find any simple answer to my problem. > I have a radio signal from which I'm able to visualize the FFT in GNU > Radio > Companion. > Now I would like to save the FFT (more exactly the magnitude squared, or > the spectrum) accumulated over a given period of time (the average over > time) into a file. > > I found the following blocks in GRC that seem to be helpful: > - stream to vector > - FFT > - complex to mag > - file sink > > However I did not manage to save any accumulated spectrum... > > Any help (eg a woking example) would be very welcome! > > Thanks in advance. > > Adellain > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@ > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://gnuradio.4.n7.nabble.com/accumulate-spectrum-tp60256p60265.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio