What is FFT (Fast Fourier Transform)?

A fast Fourier transform (FFT) processes the discrete Fourier transform (DFT) of a sequence. Fourier analysis changes over a signal from its original domain to a representation in the frequency domain. Fast Fourier transforms are generally utilized for applications in designing, music, science, and mathematics. The “Fast Fourier Transform” (FFT) is a significant estimation technique in the science of audio and acoustics estimation.