kissfft
A simple, portable Fast Fourier Transform (FFT) library for C with support for fixed and floating point data types.
What is kissfft?
KISS FFT is a Fast Fourier Transform library written in C that implements mixed-radix FFT algorithms. It solves the need for a simple, portable FFT implementation that supports both fixed and floating point data types with minimal licensing restrictions. The library is designed to be easily incorporated into C programs while maintaining reasonable performance.
C/C++ developers working on signal processing, audio applications, or embedded systems who need a straightforward FFT implementation without the complexity of highly optimized libraries.
Developers choose KISS FFT for its simplicity, portability, and permissive licensing. Unlike larger, more complex FFT libraries, it offers a clean codebase (about 500 lines for the core) that's easy to understand and integrate, with support for multiple data types and build systems.
Overview
a Fast Fourier Transform (FFT) library that tries to Keep it Simple, Stupid
Use Cases
Best For
- Embedded systems requiring fixed-point FFT computations
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