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FFT for input sequence of any length

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This program can calculate FFT of a sequence of length 2^n, where n < ∞

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Description

This is a substitute of the function 'FFT'.

Required Products Aerospace Toolbox
MATLAB release MATLAB 7.8 (R2009a)
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Comments and Ratings (2)
31 Dec 2011 Jitendra Dalei

The screen shot is a graph in 3-D coordinate. X-axis defines k, y-axis and z-axis define real and imaginary parts of X(k). Here X(k) is the FFT output of x1(input). I did it in 3-D cause in simple stem the figure only contains imaginary part of X(K).

I've non idea which algorithm is used in MATLAB 'FFT'. There may be a difference in algorithm,but we can't see it.So I implemented my own.

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30 Dec 2011 Jan Simon

Jan Simon (view profile)

Please explain what we see in the screenshot and the differences between Matlab's fft and your implementation.

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