This is an open-source re-implementation of the NullSoft Expression Evaluation Library 2, as used in the Milkdrop music visualizer.

dsp is an audio processing program with an interactive mode.

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

This package provides a JACK Audio Connection Kit (JACK) client for Python. This variant uses the compatibility JACK implementation provided by Pipewire.

The pa-notify daemon sends notifications about the current volume level of PulseAudio or PipeWire using libnotify.

liblo is a lightweight library that provides an easy to use implementation of the Open Sound Control (OSC) protocol.

QM-DSP is a C++ library of functions for DSP and Music Informatics purposes developed at Queen Mary, University of London.

SuperCollider is a synthesis engine (scsynth or supernova) and programming language (sclang). It can be used for experimenting with sound synthesis and algorithmic composition.

SuperCollider requires jackd to be installed in your user profile and your user must be allowed to access the realtime features of the kernel. Search for "realtime" in the index of the Guix manual to learn how to achieve this using Guix System.

CHOW Tape is an analog tape machine physical model, originally based on the Sony TC-260. The current version can be used to emulate a wide variety of reel-to-reel tape machines.

freealut is the OpenAL Utility Toolkit.

IR is a low-latency, real-time, high performance signal convolver especially for creating reverb effects. It supports impulse responses with 1, 2 or 4 channels, in any soundfile format supported by libsndfile.

The LV2 Toolkit (LVTK) contains libraries that wrap the LV2 C API and extensions into easy to use C++ classes. It is the successor of lv2-c++-tools.

The LSP DSP library provides a set of functions that perform SIMD-optimized computing on several hardware architectures. All functions currently operate on IEEE-754 single-precision floating-point numbers.

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

python-resampy implements the band-limited sinc interpolation method for sampling rate conversion as described by Julius O. Smith at the Digital Audio Resampling Home Page.

Pure Python bindings for Augeas.

Augeas is a library and command line tool for programmatically editing configuration files in a controlled manner. Augeas exposes a tree of all configuration settings and a simple local API for manipulating the tree. Augeas then modifies underlying configuration files according to the changes that have been made to the tree; it does as little modeling of configurations as possible, and focuses exclusivley on transforming the tree-oriented syntax of its public API to the myriad syntaxes of individual configuration files.

The Yubico PAM module provides an easy way to integrate the YubiKey into your existing user authentication infrastructure.

Pamtester is a tiny utility program to test the pluggable authentication modules (PAM) facility, specifically designed to help PAM module authors to intensively test their own modules.

oauth2l (pronounced ``oauth tool'') is a simple command-line tool for working with Google OAuth 2.0 written in Go. Its primary use is to fetch and print OAuth 2.0 access tokens, which can be used with other command-line tools and scripts.

This package provides a library to generate HOTPs as specified in RFC 4226 and TOTPs as specified in RFC 6238.

The OATH Toolkit provides various components for building OTP authentication systems:

• oathtool, a command-line tool for generating & validating OTPs.

• liboath, a C library for OATH handling.

• pskctool, a command-line tool for manipulating secret key files in the PSKC format described in RFC6030.

• libpskc, a shared and static C library for PSKC handling.

• pam_oath, a PAM module for pluggable login authentication.

Supported technologies include the event-based HOTP algorithm (RFC4226), the time-based TOTP algorithm (RFC6238), and PSKC (RFC6030) to manage secret key data.

AutoGen is a program to ease the maintenance of programs that contain large amounts of repetitive text. It automates the construction of these sections of the code, simplifying the task of keeping the text in sync. It also includes an add-on package called AutoOpts, which is specialized for the maintenance and documentation of program options.

Autoconf offers the developer a robust set of M4 macros which expand into shell code to test the features of Unix-like systems and to adapt automatically their software package to these systems. The resulting shell scripts are self-contained and portable, freeing the user from needing to know anything about Autoconf or M4.