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Re: [Discuss-gnuradio] accumulate spectrum

From: madengr
Subject: Re: [Discuss-gnuradio] accumulate spectrum
Date: Mon, 30 May 2016 18:19:46 -0700 (MST)

Try this:


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.


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

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