LibOFA is an audio fingerprint library, created and provided by MusicIP.

libkeyfinder is a small C++11 library for estimating the musical key of digital audio.

This package provides a LADSPA plugin for a four-band parametric equalizer. Each section has an active/bypass switch, frequency, bandwidth and gain controls. There is also a global bypass switch and gain control.

The 2nd order resonant filters are implemented using a Mitra-Regalia style lattice filter, which is stable even while parameters are being changed.

All switches and controls are internally smoothed, so they can be used live without any clicks or zipper noises. This makes this plugin suitable for use in systems that allow automation of plugin control ports, such as Ardour, or for stage use.

Dcadec is a DTS Coherent Acoustics surround sound decoder with support for HD extensions.

libfreeaptx is an implementation of the Audio Processing Technology codecs aptX and aptX HD, mainly intended for use with an A2DP bluetooth profile.

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.

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.

yabridgectl is a tool to setup and update yabridge.

PortAudio is a portable C/C++ audio I/O library providing a simple API to record and/or play sound using a callback function or a blocking read/write interface.

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.

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

libebur128 is a C library that implements the EBU R 128 standard for loudness normalisation.

Carla is a modular audio plugin host, with features like transport control, automation of parameters via MIDI CC and remote control over OSC. Carla currently supports LADSPA (including LRDF), DSSI, LV2, VST2, and VST3 plugin formats, plus SF2 and SFZ file support. It uses JACK as the default and preferred audio driver but also supports native drivers like ALSA.

This package provides a command-line AAC-encoder.

This package provides python bindings for libsndfile based on CFFI and NumPy.

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

This is a simple Milkdrop-like music visualizer that uses the projectM library to visualize audio input.

JamesDSP is an audio effect processor for PipeWire and PulseAudio clients, featuring:

• Automatic bass boost: Frequency-detecting bass-boost

• Automatic dynamic range compressor: automated multiband dynamic range adjusting effect

• Complex reverberation IIR network (Progenitor 2)

• Interpolated FIR equalizer with flexible bands

• Arbitrary response equalizer (also known as GraphicEQ from EqualizerAPO)

• AutoEQ database integration (requires network connection)

• Partitioned convolver (Auto segmenting convolution): Mono, stereo, full/true stereo (LL, LR, RL, RR) impulse response

• Crossfeed: Realistic surround effects

• Soundstage wideness: A multiband stereo wideness controller

• ViPER-DDC: Parametric equalization on audio and creating VDC input files

• Analog modeling: An aliasing-free even harmonic generator

• Output limiter

• Scripting engine: Live programmable DSP using the EEL2 scripting language

• Scripting IDE featuring syntax highlighting, basic code completion, dynamic code outline window, console output support and detailed error messages with inline code highlighting

This package provides a simple sound library for C++.

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.

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.

Cuetools is a set of programs that are useful for manipulating and using CUE sheet (cue) files and Table of Contents (toc) files. CUE and TOC files are a way to represent the layout of a data or audio CD in a machine-readable ASCII format.

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

Python-SoXR is a Python wrapper of libsoxr, a high quality, one-dimensional sample-rate conversion library.