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FFT accelerator on SHARC

Question asked by MikeSmithCanada on Jan 6, 2011
Latest reply on Jan 6, 2011 by DivyaS

I think the answer is no -- but I thought I'd ask anyway 


I presume the FFT acclerator on the SHARC works with signals of length that are 'precisely' powers of 2 (e.g. 512, 1024)


I have a need to do more custom FFT length -- say 980 -- and no, I don't want to pad with zeros to 1024 as that distorts everything.

Is there anything I can do -- 980 is 2 * 2 * 5 * 41  so thats a 4 pt DFT followed by a 5 point DFT followed by a 41 point DFT


I think I have to go down the route of adding a custom FPGA acclerator to the SHARC -- which is where my other discussion on using Blackfin FPGA extender with SHARC comes in