[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] FFT size constraints?
From: |
Sylvain Munaut |
Subject: |
Re: [Discuss-gnuradio] FFT size constraints? |
Date: |
Fri, 1 Dec 2017 17:19:50 +0100 |
> By convention, FFT sizes seem to be powers of 2. And Gnu Radio Companion
> throws an error if you try to set a size of 16384 -- but will accept 16383.
Probably related to the size of the buffers or something like that.
> Is using a non-power-of-2 FFT simply less efficient, or are there other
> concerns?
Power of 2 FFTs are faster (potentially _much_ faster), but you can do
FFT of any sizes.
Cheers,
Sylvain