Quote:
Originally Posted by creative1
I´m looking for the simple fft explanation for guys that have no idea about math. That´s 13/14 years old guys.

I hate to be skeptical, but I'm not aware of any texts or web pages that explain FFTs in extremely elementary terms. It took me a long time for me to grasp FFT concepts well enough to code one. FFTs are complex beasts. Most FFT articles and textbooks quickly get sidetracked with optimization techniques which contribute nothing to your understanding of what they are and why they work.
You really want to find a text that talks about Fourier Transforms, rather than Fast Fourier Transforms. Good luck in your search, hopefully someone can make a recommendation