# Reason of Fast Fourier and Inverse Fast Fourier [closed]

I am not very good at mathematics
I was doing some image processing so I came to know about FFT and IFFT
I was learning about them but the mathematics involved seems to be too dense
So can someone tell me about what are FFT and IFFT and their general application in short in LayMan's Language
So that again when I go to learn it I get it a little easier.
thanks

## closed as too broad by Jason R, jonsca, Dilip Sarwate, Peter K.♦Nov 14 '13 at 22:03

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• Please try and at least let us know what sources on the internet are too complex for you. – Peter K. Nov 14 '13 at 22:03

FFT and IFFT are algorithms that implement the (inverse) discrete Fourier transform (DFT). These transforms convert a signal into another representation, namely the frequency domain, and back. This other representation allows us to analyze certain properties of the signal and also to change these properites which would be hard to do in the original representation.