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PulseAudio operational flow chart PulseAudio is a daemon that does mixing in software. In broad terms ALSA is a kernel subsystem that provides the sound hardware driver, and PulseAudio is the interface engine between applications and ALSA. However, its use is not mandatory and audio can still be played and mixed together without PulseAudio.
Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.
Before PulseAudio came along, it was not uncommon for "ill-behaved" Linux applications to exclusively lock the sound card. As for Windows and Mac OS X, IIRC, they also use userspace mixer processes, they just don't have a special name. - Sikon 10:22, 23 January 2011 (UTC)
FFmpeg is a free and open-source software project consisting of a suite of libraries and programs for handling video, audio, and other multimedia files and streams. At its core is the command-line ffmpeg tool itself, designed for processing video and audio files.
He is the developer and maintainer of several free software projects which have been widely adopted by Linux distributions, including PulseAudio sound server (2004), [2] [8] Avahi zeroconf implementation [9] [10] (2005), and systemd init system (2010).
EasyEffects (formerly known as PulseEffects) is a free and open-source GTK application for Unix-like systems which provides a large array of audio effects and filters to apply to input and output audio streams.
In computing, the Enlightened Sound Daemon (ESD or EsounD) was the sound server for Enlightenment and GNOME. Esound is a small sound daemon for both Linux and UNIX. ESD was created to provide a consistent and simple interface to the audio device, so applications do not need to have different driver support written per architecture.
Screenshot of Windows Media Encoder 9 Series, displaying new encoding options for Windows Media Audio 10 Professional. Windows Media Audio Professional (WMA Pro) is an improved lossy codec closely related to WMA standards. It retains most of the same general coding features, but also features improved entropy coding and quantization strategies ...