The Portable C Audio Library (pcaudiolib) provides a C API to different audio devices such as ALSA or PulseAudio.

yabridgectl is a tool to setup and update yabridge.

OpenShot Audio Library (libopenshot-audio) allows high-quality editing and playback of audio, and is based on the JUCE library.

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

RtMidi is a set of C++ classes (RtMidiIn, RtMidiOut, and API specific classes) that provide a common cross-platform API for realtime MIDI input/output.

FAudio is an XAudio reimplementation that focuses solely on developing fully accurate DirectX Audio runtime libraries.

C.A.V.A. is a bar audio spectrum visualizer for the terminal using ALSA, MPD, PulseAudio, or a FIFO buffer as its input.

This package provides Steve Harris's LADSPA plugins.

siggen is a set of tools for imitating a laboratory signal generator, generating audio signals out of Linux's /dev/dsp audio device. There is support for mono and/or stereo and 8 or 16 bit samples.

An easy to use audio filtering library made from webrtc code, used in libtoxcore.

RtAudio is a set of C++ classes that provides a common API for real-time audio input/output. It was designed with the following objectives:

• object-oriented C++ design

• simple, common API across all supported platforms

• only one source and one header file for easy inclusion in programming projects

• allow simultaneous multi-api support

• support dynamic connection of devices

• provide extensive audio device parameter control

• allow audio device capability probing

• automatic internal conversion for data format, channel number compensation, (de)interleaving, and byte-swapping

TiMidity++ is a software synthesizer. It can play MIDI files by converting them into PCM waveform data; give it a MIDI data along with digital instrument data files, then it synthesizes them in real-time, and plays. It can not only play sounds, but also can save the generated waveforms into hard disks as various audio file formats.

This package provides a LADSPA plugin to manipulate the stereo width of audio signals.

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

Rakarrack is a richly featured multi-effects processor emulating a guitar effects pedalboard. Effects include compressor, expander, noise gate, equalizers, exciter, flangers, chorus, various delay and reverb effects, distortion modules and many more. Most of the effects engine is built from modules found in the excellent software synthesizer ZynAddSubFX. Presets and user interface are optimized for guitar, but Rakarrack processes signals in stereo while it does not apply internal band-limiting filtering, and thus is well suited to all musical instruments and vocals.

aubio is a tool designed for the extraction of annotations from audio signals. Its features include segmenting a sound file before each of its attacks, performing pitch detection, tapping the beat and producing MIDI streams from live audio.

VO-AACENC is the VisualOn implementation of Advanced Audio Coding (AAC) encoder.

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

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.

RtOSC is a realtime safe library for handling OSC messages.

cli-visualizer displays fast-Fourier transforms (FFTs) of the sound being played, as well as other graphical representations.

rtcqs analyzes a Linux system to detect possible bottlenecks that could have a negative impact on real-time audio performance. It checks kernel configuration, IRQ priorities, CPU governor, swappiness, and other settings relevant to low-latency audio work.

yabridge is Yet Another way to use Windows audio plugins. It supports using Windows VST2, VST3, and CLAP plugins in plugin hosts as if they were native plugins, with optional support for plugin groups to enable inter-plugin communication for VST2 plugins and quick startup times.

This package provides a header-only version of the HIIR library by Laurent De Soras, updated to version 1.40. HIIR is a C++ library for changing the sampling rate of a signal by a factor two, in both directions (upsampling and downsampling), obtaining two signals with a π/2 phase difference (Hilbert transform). It is made of a two-path polyphase IIR filter, implemented with FPU, 3DNow!, SSE, SSE2, AVX, AVX-512 and NEON instruction sets.

This package contains the same as the original library, except with the contents of one source file moved into a header file (and set as inline) to make the library header-only, and with the test folder removed.