Marcus: I like the way the waterfall looks, but I'm having the same issue as the FFT.
Looking at the configuration for my FFT, and changing 'Refresh Rate' from the default '15' to '1M' gives me some extra playback. My datafile was recorded for about 20 seconds at a sample rate of 50Msps through a low-pass filter to only capture 0-30MHz. Is there some correlation between data rate on the record and FFT refresh rate? How is 'FFT Size' used (right now I have that at '1024')? On a related note - is there a way to get the FFT to start out in 'Autoscale', or do I need to hit the button every time? Thanks! On Tue, Dec 3, 2013 at 3:01 PM, Marcus Müller <mar...@hostalia.de> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Most probably your data is simply to short in relation to the fft > length and the amount of samples your specific graphical FFT amplitude > sink drops for display. > Please review you fft length, update rate, and try out different fft > GUIs (qt/wx). > > You could zeropad your data generously to notice the repitition. > However, I think with what you're describing you might be better off > with a waterfall graph; try them, they're fun :) > > Greetings, > Marcus > > On 03.12.2013 21:45, Paul B. Huter wrote: > > When I play my data file back through a throttle and frequency > > translating FIR filter to an FFT sink with repeat OFF, it seems to > > just show a static plot. However, with repeat ON, I get playback, > > but I can't tell when data ends and starts back over. Is there a > > way for me to know when it repeats? Or, is there a way to get > > playback with repeat turned off? > > > > Thanks. > > > > Paul B. Huter > > > > > > > > _______________________________________________ Discuss-gnuradio > > mailing list Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.15 (GNU/Linux) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSnkalAAoJEAFxB7BbsDrL4hIIAJGddnpUH8WCsstTwJsqFkII > +RmVlO/qKFLiY1FXHL0BUaV2Ls1cC3w90cpfruodLYej9yDK6p17MLSXnI+4MV9i > iMq3QDrgj3uPij9xbvG+5NtiKzcpHwxy5lKSICiZdyDNfjtKggrVszwC+hFQHtwU > rAMGEnSSAqRLTGsrFbpsFLJ9D/mMCzKEocqeo5hppMZ9/fT+bSvHt7v0MOWG9Y75 > F3F7ovPM/XrDw3mtIzCLhHchnsdiH+E46nJNgjHwp6zwKZmP+XXR3FAa5lMlXxvT > WemqzRo64sNizykEbWZAKpprg3caY5csUURWmKTuovZZVJuRFJUPjZD3C0Poyto= > =tJdv > -----END PGP SIGNATURE----- > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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