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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

    21
    0
    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

    JWHassler

    78
    16
    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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