axfx

Axfx is a modular audio effects framework and the name of an open-source project that provides tools for real-time audio processing. Drawing on the common abbreviation fx for effects, axfx aims to let developers and musicians build, route, and experiment with signal-processing chains using a configurable set of processing units.

The architecture centers on a directed processing graph. Nodes represent effect modules such as EQ, delay, distortion, filtering, or dynamics processors, while edges carry audio and control signals. A central scheduler coordinates sample-accurate operation at typical sample rates, prioritizing low latency and deterministic timing for live use. The design emphasizes flexibility, allowing users to compose complex chains from simple building blocks and to reconfigure routes on the fly.

The project provides a C++ core library and bindings that enable integration with standalone applications and lightweight hosts. It ships with a collection of built-in effects, parameter management, automation support, and the ability to serialize presets and chains for quick recall. Tools for debugging, profiling, and benchmarking DSP algorithms are often included to assist development and testing.

In the open-source community, axfx is maintained through a public repository with issue tracking, discussions, and contributions from developers around the world. Documentation covers getting started, API references, tutorials on building custom effects, and guidance for deploying axfx-based pipelines in music production, game audio, or research contexts. See also digital signal processing and audio plugin concepts.