====== asoundrc ======
The ''.asoundrc'' file allows a user to leverage extra functionality offered by [[apps:all:ALSA]]. This article is supplemental to the information available on the [[https://www.alsa-project.org/main/index.php/Asoundrc|ALSA wiki]]

===== Syntax =====
The ''.asoundrc'' file uses a simple syntax that consists of code blocks enclosed by curly braces to create so-called definitions. Definitions can be created for several types of devices. The most used are:

  - ''pcm'' devices. These can be actual hardware or virtual devices created in the ''.asoundrc'' file itself.
  - ''pcm_slave'' devices.  These are secondary references to either hardware or virtual devices. They can be used to chain definitions.
  - ''ctl'' devices. These comprise how programs can modify specific parameters of hardware or virtual devices.

To assign a definition to a device add a line beginning with one of the key words above followed by a dot and the name of the device. This name can be a reference to the default card (''!default'') or a designation of choice.

===== Definitions =====
Definitions must contain at least the ''type'' key word followed by the name of the PCM plugin that has to be configured. A full list of available plugins can be found here: https://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html

===== References =====
[[https://www.alsa-project.org/main/index.php/Asoundrc|Asoundrc]]\\
[[https://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html|ALSA project - the C library reference]]\\
[[https://www.volkerschatz.com/noise/alsa.html|A close look at ALSA]]