GitHub

A high-performance, fully pipelined Fast Fourier Transform (FFT) implementation using Radix-2 Decimation in Time (DIT) algorithm based on the Cooley-Tukey method.

85x faster than direct DFT for N=1024 341x faster than direct DFT for N=4096 Complexity improvement: O(N²) → O(N log N) Signal Quality Average SQNR: 78.28 dB Minimum SQNR: 77.80 dB Maximum SQNR: 78.72 ...
IEEE

Simulation and Analysis of DIT FFT Algorithm for Spartan 3 FPGA

Abstract: The Fast Fourier Transform (FFT) and its Inverse (IFFT) is one of the most widely used algorithms in digital signal processing. Using this transform, signals can be moved to the frequency ...
GitHub

SWang-FD/FFT-DIT-DIF-radix-2-4-8

给定一个离散的实数序列$x[n]$，我们可以用DFT得到一个离散的频谱(spectrum)$X[k]$，其中频谱第$k$个点计算公式为： $$ F[k]=\sum_{n=0 ...
EDN

FFT Algorithm Based Audio Spectrum Analyzer

This audio spectrum analyzer utilizes an ARM7 LPC2138 microcontroller to create an FFT algorithm while performing digital signal processing without the use of special DSP processor. This audio ...
AZoOptics

What is the Difference Between FFT and PSD?

Fourier transform is a key method for analyzing signals in both time and frequency domains. The FFT is a computational algorithm that efficiently computes the discrete Fourier transform (DFT) and its ...