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Dynamic FFT in VHDL

Discussion in 'Microcontrollers, Programming and IoT' started by Joe Bachi, May 5, 2016.

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  1. Joe Bachi

    Joe Bachi

    Feb 3, 2013
    Hey everyone,
    I've been trying to find a way to implement a dynamic FFT function that can be configured to take different numbers of inputs with the number being a multiple of twelve.
    To this end, I am trying to use the Xilinx xfft v8 that does exactly what I need except that the number of inputs is a power of two.
    Any suggestions on how to use this module to create one that takes multiples of twelve?
    Thank you in advance
  2. JWHassler


    Dec 22, 2014
    I believe that the Fast Fourier Transform is fast partially because it requires the input data to be a power-of-two in length.
    Can you add zeros to your data to make it fit?

    This has always helped me with DSP concepts
    Harald Kapp likes this.
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