FFT (Fast Fourier Transform)

The Fast Fourier Transform (FFT) is an efficient algorithm that breaks down complex signals into their basic building blocks—simple waves called frequencies. Think of a musical chord: FFT identifies the individual notes (frequencies) that make it up, similar to analyzing a mixed sound to find its components. This process helps us understand, analyze, and manipulate signals like audio, images, or data streams more quickly and effectively. By transforming data from the time or spatial domain into the frequency domain, FFT enables many technological applications, from audio compression to image processing.