Guitarix is a virtual guitar amplifier running JACK. Guitarix takes the signal from your guitar as a mono-signal from your sound card. The input is processed by a main amp and a rack-section. Both can be routed separately and deliver a processed stereo-signal via JACK. You may fill the rack with effects from more than 25 built-in modules including stuff from a simple noise gate to modulation effects like flanger, phaser or auto-wah.

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

This is a PyQT GUI application to dynamically modify Pipewire and Wireplumber settings at runtime, such as quantum. sample rate, latency offset setting, services restart and more. It features side-by-side and graph style connections manager, pw-top wrapper, simple ALSA mixer and jack_delay GUI.

This C library provides an encoder and a decoder for the GSM 06.10 RPE-LTP lossy speech compression algorithm.

The blvco LADSPA plugin provides three anti-aliased oscillators:

1. Pulse-VCO, a dirac pulse oscillator with flat amplitude spectrum

2. Saw-VCO, a sawtooth oscillator with 1/F amplitude spectrum

3. Rec-VCO, a square / rectangle oscillator

All oscillators are low-pass filtered to provide waveforms similar to the output of analog synthesizers such as the Moog Voyager.

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.

This package provides a LADSPA plugin for a Wah effect with envelope follower.

The Odio SACD shared library is a decoding engine which takes a Super Audio CD source and extracts a 24-bit high resolution WAV file. It handles both DST and DSD streams.

Qsynth is a GUI front-end application for the FluidSynth SoundFont synthesizer written in C++.

Libltc is a POSIX-C Library for handling Linear/Longitudinal Time Code (LTC) data.

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.

Ardour is a multi-channel digital audio workstation, allowing users to record, edit, mix and master audio and MIDI projects. It is targeted at audio engineers, musicians, soundtrack editors and composers.

JackTrip is a multi-machine audio system used for network music performance over the Internet. It supports any number of channels (as many as the computer/network can handle) of bidirectional, high quality, uncompressed audio signal streaming.

Codec 2 is a speech codec designed for communications quality speech between 700 and 3200 bit/s. The main application is low bandwidth HF/VHF digital radio.

fmsynth is an LV2 plugin which implements an FM (Frequency Modulation) synthesizer. Unlike most FM synth implementations in software, this FM synthesizer does not aim to emulate or replicate a particular synth (like DX7) or FM chip.

This package provides a Python high-level interface and ctypes-based bindings for PulseAudio (libpulse), to use in simple synchronous code. This wrapper is mostly for mixer-like controls and introspection-related operations, as opposed to e.g. submitting sound samples to play and player-like clients.

This Python module provides bindings for the PortAudio library and a few convenience functions to play and record NumPy arrays containing audio signals.

This package provides a barebones, fast LV2 bass enhancement plugin.

Cubeb is Mozilla's cross-platform audio library.

OpenAL provides capabilities for playing audio in a virtual 3D environment. Distance attenuation, doppler shift, and directional sound emitters are among the features handled by the API. More advanced effects, including air absorption, occlusion, and environmental reverb, are available through the EFX extension. It also facilitates streaming audio, multi-channel buffers, and audio capture.

EasyEffects is an advanced audio manipulation tool providing a graphical user interface to apply various effects and filters to audio streams using Pipewire. Effects can be applied in real time to audio inputs or outputs such as a microphone to reduce noise or apply many other effects including:

• Auto gain

• Bass enhancer

• Bass loudness

• Compressor

• Convolver

• Crossfeed

• Crystalizer

• De-esser

• Delay

• Echo Canceller

• Equalizer

• Exciter

• Filter (low-pass, high-pass, band-pass and band-reject modes)

• Gate

• Limiter

• Loudness

• Maximizer

• Multiband compressor

• Multiband gate

• Noise reduction

• Pitch

• Reverberation

• Speech Processor

• Stereo tools

alsa-midi-latency-test measures the roundtrip time of a MIDI message in the alsa subsystem of the Linux kernel using a high precision timer. It calculates the worst case roundtrip time of all sent MIDI messages and displays a histogram of the roundtrip time jitter.

WebRTC-Audio-Processing library based on Google's implementation of WebRTC.

Lilv is a C library to make the use of LV2 plugins as simple as possible for applications. Lilv is the successor to SLV2, rewritten to be significantly faster and have minimal dependencies.