Discrete Fourier Transform - Simple Step by Step

https://www.youtube.com/watch?v=mkGsMWi_j4Q

FFT - Simple Step by Step

https://www.youtube.com/watch?v=htCj9exbGo0

Autres videos sur FFTs:

(si vous trouvez un autre video sur FFTs que vous aimez veuillez me le passer svp!)

But what is the Fourier Transform? A visual introduction.

https://www.youtube.com/watch?v=spUNpyF58BY

3 Applications of the (Fast) Fourier Transform 

https://www.youtube.com/watch?v=aqa6vyGSdos&t=106s

Intuitive Understanding of the Fourier Transform and FFTs

https://www.youtube.com/watch?v=FjmwwDHT98c&t=1670s