Speex is an Open Source/Free Software patent-free audio compression
format designed for speech.
Spek helps to analyse your audio files by showing their spectrogram.
Spek supports all popular lossy and lossless audio file formats.
Libcddb documentation
[For more info about libcddb see audio/libcddb/pkg-descr]
Many audio synthesis and recording packages are in use or in
development. These work in many different ways. LADSPA
provides a standard way for `plugin' audio processors to be used with
a wide range of these packages.
For instance, this allows a developer to make a reverb program and
bundle it into a LADSPA `plugin library.' Ordinary users can then use
this reverb within any LADSPA-friendly audio application.
LAME is an highly evolved LGPL MP3 encoder with quality and speed able to
rival state of the art commercial encoders.
The official last.fm radio player application. Integrates with Konqueror and
(Linux-)Firefox.
libdssialsacompat is simply an extraction from and repackaging of
the code from alsa-lib 1.0.8, necessary to support DSSI on non-ALSA
systems.
[ from developer's site ]
It is a free library for decoding ATSC A/52 streams, aka AC-3. The
A/52 standard is used in a variety of applications, e.g., digital
television and DVD. The main goals in liba52 development are:
Portability - most of the code is written in C, and when we use
platform-specific optimizations we always have a generic C routine
to fall back on.
Reusability - we do not want liba52 to include any project-specific
code, but it should still include enough features to be used by
very diverse projects.
Precision - We are trying to implement all of the A/52 standard,
and to have a very precise output by doing all the calculations in
floating point. We have a test suite that detects any deviation in
the output when compared to previous versions. We do not have access
to official A/52 test vectors though, so we have to use our judgement
to ensure that such deviations are only introduced when we fix bugs!
Speed - liba52 is really fast, on any modern PC it should take only
a few percent of CPU time.
AdPlug is a free, cross-platform, hardware independent AdLib sound player
library, mainly written in C++ and released under the LGPL. AdPlug plays
sound data, originally created for the AdLib (OPL2) audio board, directly
from its original format on top of an OPL2 emulator or by using the real
hardware. No OPL chip is required for playback.
libcdaudio is a library designed to provide functions to control
operation of a CD-ROM when playing audio CDs. It also contains
functions for CDDB and CD Index lookup.