Fourier Transform & FFT === Fourier Transform --- https://www.youtube.com/watch?v=1JnayXHhjlg ![](https://i.imgur.com/4MvqBGF.jpg) ![](https://i.imgur.com/i8YUCvL.jpg) ![](https://i.imgur.com/BtHyMk0.png) ![](https://i.imgur.com/8W8nIWk.jpg) ![](https://i.imgur.com/0zB3eba.jpg) ![](https://i.imgur.com/jkI1QVD.jpg) ![](https://i.imgur.com/43H0htn.jpg) ![](https://i.imgur.com/C8HUfc6.png) Fast Fourier Transform --- ![](https://i.imgur.com/iT5djBk.jpg) ![](https://i.imgur.com/VmHAaOc.jpg) ![](https://i.imgur.com/9K6JTEa.jpg) ![](https://i.imgur.com/y7QjKbM.jpg) ![](https://i.imgur.com/ZEDovpz.png)