Mirror of https://git.ffmpeg.org/ffmpeg.git

Arduino Audio Tools (a powerful Audio library not only for Arduino)

sound synthesis and sequencing

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

VectorFFT is a vectorized, pure C FFT library optimized for x86 processors (AVX-512, AVX2, SSE2) with zero external dependencies. It implements mixed-radix algorithms for common sizes and Bluestein's method for arbitrary lengths, with OpenMP multi-threading for large transforms. Designed for both digital signal processing and financial applications

Streamlining Software Design

SpecTUI is a lightweight terminal audio visualizer in C

Not yet another spectrum analyzer — an experimental DSP & graphics playground. It combines real-time C++ performance with Python flexibility, offering fully customizable FFT visualizations without recompilation. Perfect for audio engineers, DSP researchers, graphics developers, students, and hobbyists.

CMSIS-DSP embedded compute library for Cortex-M and Cortex-A

Colahall libspark: Signal Processing Algorithms, Routines, and Kernels

dsPIC33A Code Examples

Mini Audio Wave and FFT Visualizer on Custom PCB

Numo::Pocketfft provides functions for descrete Fourier Transform based on pocketfft

STFT based real-time pitch and timbre shifting in C++ and Python

Discrete Fourier Transform Tool (DFTT) for real-valued data like audio files and CSVs.

A fork of Julien Pommier's Pretty Fast FFT (PFFFT) library, packaged for zig (branch zig)

The repository provides code, build instructions, and usage guidelines for each FFT implementation.

libdspl-2.0 is opensource cross-platform digital signal processing algorithm library, written in C language.

A small and fast Discrete Fourier Transform library

implementation of DFT and FFT in small scale