|Subject:||Re: [Discuss-gnuradio] Display frequency from transient plot.|
|Date:||Thu, 12 May 2016 22:58:08 +0200|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0|
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
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.
On 12.05.2016 22:38, Rob Croce wrote:
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