sound synthesis and sequencing

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

C library for audio noise reduction and other spectral effects

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

The little FFT library

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

FFT-accelerated Singular Spectrum Analysis in C. SSA at the speed of FFT. Decompose time series into trend, seasonality & noise. O(N log N) Hankel matvec.

Pure C image processing library - Learn DFT/FFT, convolution, edge detection from scratch. Zero dependencies, perfect for embedded systems.

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

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.

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

DO NOT CHECK OUT THESE FILES FROM GITHUB UNLESS YOU KNOW WHAT YOU ARE DOING. (See below.)

STM32 based oscilloscope, AiR 6 sem PWR

Embedded C firmware for an STM32 heart rate monitor, implementing a real-time FFT for DSP signal processing from analog sensor data.

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

Colahall libspark: Signal Processing Algorithms, Routines, and Kernels

dsPIC33A Code Examples

Mini Audio Wave and FFT Visualizer on Custom PCB