By the way, I can barely decipher your screenshot. I strongly recommend using the screenshot functionality of your operating system instead of using a camera to digitize the analog lightwaves that were generated from a screen that converted the digital picture to light... that being said, I don't really understand your question > The time between rise and fall is known since it is plotting it on the > time axis, So: What is the very definition of "frequency"? Right, it's the rate at which a periodic thing happens. so you measure the time distance between two rising edges, and do 1/that, and instantly have the frequency. That's a very "analog measurement device" or "cycle counting" way of doing this. > oscilloscope calculates and displays a frequency number. Hm. What do *you* think the oscilloscope does? Dan's recommendation was absolutely on-spot. Use a spectrum/fft sink. If you don't understand what "spectrum" is, read a bit wikipedia :) That's really the easiest way I could think of. Other than that, read up on autocorrelation, and how to calculate it in a DSP system.
Best regards, Marcus On 12.05.2016 22:38, Rob Croce wrote: > OK thanks. I just need to display a number for the frequency of the > pulses. The time between rise and fall is known since it is plotting > it on the time axis, so I am wondering if there is anyway I can > extract frequency that way. Similar to frequency counting on a micro, > or how an oscilloscope calculates and displays a frequency number. > > On Thu, May 12, 2016 at 4:30 PM, Dan CaJacob <[email protected] > <mailto:[email protected]>> wrote: > > I would need more details about what you're trying to accomplish, > but my first reaction would be to attach an FFT GUI sink. > > On Thu, May 12, 2016 at 4:26 PM Rob Croce <[email protected] > <mailto:[email protected]>> wrote: > > Hi all. I have transient pulses that I am displaying using > the transient plot, and I am wondering how I can display the > frequency of the pulses. The duty cycle is similar for all > pulses, just the frequency is varying. Is there a simple way > to do this? > > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] <mailto:[email protected]> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- > Very Respectfully, > > Dan CaJacob > > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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