Re: [Discuss-gnuradio] FFT size constraints?

[Sylvain Munaut]

> 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