Re: Time Partitioned FFT

[Chris Kuethe]

Why?

How would this work on a 2-core ARM SBC vs some fancy 32-core workstation?

What about the incoming sample rate? Are you getting 2Msps from an RTLSDR, or 200Msps from a very powerful instrument?

And how many points is your FFT?
What are you doing with the output of the FFT?

1000ms / 40ms interval = up to 25 parallel FFT threads... do you have the memory bandwidth to support this?

In other words: what problem are you trying to solve?

On Fri, Aug 5, 2022 at 6:22 PM Elmore's <wa4ywm@comcast.net> wrote:

Is it possible to use GNU radio to perform time partitioning of FFTs?

 

I would like to be able to start an FFT and run it for 160 ms. A second one would start 40 ms after the start of the first and run for 160 ms. A third would start 40 ms after the start of the second. This process would continue for any number of FFTs.

 

I hope I have correctly asked the question. I’m not even sure how you would limit the running time of the FFT.

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