Zita-alsa-pcmi is a C++ wrapper around the ALSA API. It provides easy access to ALSA PCM devices, taking care of the many functions required to open, initialise and use a hw: device in mmap mode, and providing floating point audio data.

shntool is a multi-purpose WAVE data processing and reporting utility. File formats are abstracted from its core, so it can process any file that contains WAVE data, compressed or not---provided there exists a format module to handle that particular file type. It can also generate CUE files, and use them split WAVE data into multiple files.

Omins-lv2 is a small collection of LV2 audio plugins for modular synthesis.

Patchage is a modular patch bay for audio and MIDI systems based on JACK and ALSA.

Pyliblo is a Python wrapper for the liblo Open Sound Control (OSC) library. It supports almost the complete functionality of liblo, allowing you to send and receive OSC messages using a nice and simple Python API. Also included are the command line utilities send_osc and dump_osc.

Tao is a software package for sound synthesis using physical models. It provides a virtual acoustic material constructed from masses and springs which can be used as the basis for building quite complex virtual musical instruments. Tao comes with a synthesis language for creating and playing instruments and a C++ API for those who would like to use it as an object library.

SBSMS (Subband Sinusoidal Modeling Synthesis) is software for time stretching and pitch scaling of audio. This package contains the library.

ALURE is a utility library to help manage common tasks with OpenAL applications. This includes device enumeration and initialization, file loading, and streaming.

VO-AMR is a library of VisualOn implementation of Adaptive Multi Rate Narrowband and Wideband (AMR-NB and AMR-WB) speech codec.

libaudec is a wrapper library over ffmpeg, sndfile and libsamplerate for reading and resampling audio files, based on Robin Gareus' audio_decoder code.

LV2 is an open specification for audio plugins and host applications. At its core, LV2 is a simple stable interface, accompanied by extensions which add functionality to support the needs of increasingly powerful audio software.

mp3guessenc is a command line utility that tries to detect the encoder used for an MPEG Layer III (MP3) file, as well as scan any MPEG audio file (any layer) and print a lot of useful information.

LibOpenMPT is a cross-platform C++ and C module playback library. It is based on the player code of the Open ModPlug Tracker project.

XJackFreak is an audio analysis and equalizing tool for the Jack Audio Connection Kit. It can display the FFT of any input, modify it and output the result.

JACK is a low-latency audio server. It can connect a number of different applications to an audio device, as well as allowing them to share audio between themselves. JACK is different from other audio server efforts in that it has been designed from the ground up to be suitable for professional audio work. This means that it focuses on two key areas: synchronous execution of all clients, and low latency operation.

python-pysox is a wrapper around the sox command line tool. The API offers Transformer and Combiner classes that allow the user to incrementally build up effects and audio manipulations. python-pysox also provides methods for querying audio information such as sample rate, determining whether an audio file is silent, and much more.

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. FluidSynth reads and handles MIDI events from the MIDI input device. It is the software analogue of a MIDI synthesizer. FluidSynth can also play midifiles using a Soundfont.

The jack_mixer is a GTK+ JACK audio mixer app with a look & handling similar to hardware mixing desks. It has lot of useful features, apart from being able to mix multiple JACK audio streams.

This package provides a stereo reverb LADSPA plugin based on the well-known greverb.

BS1770GAIN is a loudness scanner compliant with ITU-R BS.1770 and its flavors EBU R128, ATSC A/85, and ReplayGain 2.0. It helps normalizing the loudness of audio and video files to the same level.

librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.

lv2toweb allows the user to create an xhtml page with information about the given LV2 plugin, provided that the plugin and its UI(s) match up with the provided metadata and adhere to well-known best practices.

Redkite is a small GUI toolkit developed in C++17 and inspired from other well known GUI toolkits such as Qt and GTK. It is minimal on purpose and is intended to be statically linked to applications, therefore satisfying any requirements they may have to be self contained, as is the case with audio plugins.

An LV2 port of the mda EPiano VSTi.