FFT Analyzer Basic FAQ

FFT stands for Fast​ ​Fourier Transform, and it is a digital signal processing algorithm that performs the Discrete Fourier Transform (DFT) at high speed. DFT​ ​is a technique for performing the Fourier Transform on a finite digital signal.

By utilizing FFT technology, it becomes possible to perform real-time frequency analysis on time signals.

Since FFT is used in binary computers and DSPs (Digital​ ​Signal​ ​Processors), the number of finite data points in an FFT is usually a power of 2 (i.e., 2 bases).