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PulseAudio under the hood - Victor Gaydov
https://gavv.github.io/articles/pulseaudio-under-the-hood/
Emulating PulseAudio on top of ALSA. The apulse wrapper tool uses the LD_PRELOAD trick to implement libpulse and libpulse-simple API directly on top of ALSA (libasound). The typical use case for this method is to run PulseAudio applications that don’t support ALSA on a system that uses ALSA, without even installing PulseAudio.
How to ask ALSA to output to a specific Pulseaudio sink ...
https://unix.stackexchange.com/questions/505931/how-to-ask-alsa-to-output-to-a-specific-pulseaudio-sink
You cannot specify the device when you use the ALSA wrapper to access Pulseaudio. You need an application that can access Pulseaudio directly to do that. – dirkt. Sep 4 '19 at 17:56. It works for me to specify the device as …
PulseAudio - ParabolaWiki
https://wiki.parabola.nu/PulseAudio
4.1 ALSA. Install pulseaudio-alsa from the official repositories. This package contains the necessary /etc/asound.conf for configuring ALSA to use PulseAudio. Also install lib32-libpulse and lib32-alsa-plugins if you run a x86_64 system and want to have sound for 32-bit multilib programs like Wine, Skype and Steam.
What is the relation between ALSA and PulseAudio sound ...
https://askubuntu.com/questions/581128/what-is-the-relation-between-alsa-and-pulseaudio-sound-architecture
ALSA is unable by itself to be used by multiple applications, so PulseAudio provides this functionality among others. Summarized: ALSA - dealing with the hardware, basically owning it. PulseAudio - a software proxy providing additional featues (mixing, equalizer) between your application and the ALSA/OSS subsystem.
Audio APIs, Part 2: Pulseaudio / Linux
https://bastibe.de/2017-06-27-audio-apis-pulseaudio.html
PulseAudio is not the only audio API on Linux. There is the grandfather OSS, the more modern ALSA, the more pro-focused JACK, and the user-focused PulseAudio.Under the hood, PulseAudio uses ALSA for its actual audio input/output, but presents the user and applications with a much nicer API and UI.
Pulseaudio on the Raspbery Pi | Crazy Audio
http://www.crazy-audio.com/2014/09/pulseaudio-on-the-raspbery-pi/
Setting up Pulseaudio on the Raspberry Pi with support for high-resolution sound formats is not trivial. However by using the right sample rates and the right resampler, it will perform well even on the Raspberry Pi. With the configuration shown here Pulseaudio uses about 50% CPU when playing back 44.1, 48kHz and 96kHz material and 20% during ...
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