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Video 2 in this series that will take you from your A-Level maths through to a reasonable, detailed understanding of Fast Fourier Transforms - enough to implement a Cooley-Tukey algorithm and to use other FFT implementations!
This is video 2 in the series. It introduces the continuous Fourier Transform and offers graphical explanations of how it works before proceeding to a mathematical inspection of the formula.
This series will take you from your A-Level maths through to a reasonable, detailed understanding of Fast Fourier Transforms - enough to implement a Cooley-Tukey algorithm and to use other FFT implementations!
The series looks at a general knowledge of Fourier Transforms through to conceptual understanding and then looks at the maths from the continuous Fourier Transform to the 2-Radix Cooley-Tukey algorithm for the Fast Fourier Transform.
The series uses simple examples with graphical samples to aid understanding. Videos 2 and 3 of the series look at the maths behind Fourier Transforms with some basic proofs and Videos 3 and 4 look at the discrete and fast Fourier Transforms and why they work.