Linux Audio Developer's Simple Plugin API

The Linux Audio Developer's Simple Plugin API (LADSPA) is an application programming interface (API) standard for handling audio filters and audio signal processing effects, licensed under LGPL-2.1-or-later. Originally designed through consensus on the Linux Audio Developers mailing list, it now works on a variety of platforms. It is used in many free audio software projects, and there is a wide range of LADSPA plug-ins available.