LGPLv2+ and LGPLv2+ with exceptions and GPLv2+ and GPLv2+ with exceptions and BSD and Inner-Net-2.0 and ISC and Public Domain and GFDL-1.3-only
An open-source, patent-free speech codec
Speex is a patent-free audio codec designed especially for voice (unlike Vorbis which targets general audio) signals and providing good narrowband and wideband quality. This project aims to be complementary to the Vorbis codec.
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This package contains the runtime libraries for any application that wishes to interface with a PulseAudio sound server.
The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.
This package contains libraries for D-BUS.
Advanced linux sound architecture (ALSA) utility to the Linux operating system.
This package provides command line utilities for audio and MIDI functionality to the Linux operating system. In addition, it also contains Use Case Manager tools and topology tools for Advanced Linux Sound Architecture (ALSA) framework.
The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system.
PulseAudio is a sound server for Linux and other Unix like operating systems. It is intended to be an improved drop-in replacement for the Enlightened Sound Daemon (ESOUND).
Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter for audio. SRC is capable of arbitrary and time varying conversions; from downsampling by a factor of 12 to upsampling by the same factor. The conversion ratio can also vary with time for speeding up and slowing down effects.
A set of basic GNU tools commonly used in shell scripts
These are the GNU core utilities. This package is the combination of the old GNU fileutils, sh-utils, and textutils packages.
the user space library that developers compile ALSA applications against
The alsa-lib is a library to interface with ALSA in the Linux kernel and virtual devices using a plugin system. More detail: https://alsa.opensrc.org/Alsa-lib
Bash is the GNU Project's shell. Bash is the Bourne Again SHell. Bash is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and C shell (csh). It is intended to conform to the IEEE POSIX P1003.2/ISO 9945.2 Shell and Tools standard. It offers functional improvements over sh for both programming and interactive use. In addition, most sh scripts can be run by Bash without modification.
Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs.