Why use fftshift(fft(fftshift(x))) in Matlab instead of fft(x)?
Explain why we use fftshift(fft(fftshift(x))) in Matlab instead of fft(x). An example is given. The example and Matlab codes are partially copied from Daniele Disco ‘s work in "A guide to the Fast Fourier Transform, 2nd Edition".
Cite As
Kan Wu (2024). Why use fftshift(fft(fftshift(x))) in Matlab instead of fft(x)? (https://www.mathworks.com/matlabcentral/fileexchange/25473-why-use-fftshift-fft-fftshift-x-in-matlab-instead-of-fft-x), MATLAB Central File Exchange. Retrieved .
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- Signal Processing > Signal Processing Toolbox > Transforms, Correlation, and Modeling > Transforms > Discrete Fourier and Cosine Transforms > Fast Fourier Transforms >
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Acknowledgements
Inspired by: A Guide to the FFT-2nd Edition Plus
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