Cards and devices

The basic piece of hardware needed to produce or capture (or record) sound is an audio chip or sound card, referred to simply as a card.

All the sound devices are attached to a card, so in order to reach a device, you must first know what card it's attached to. The following diagram shows cards and devices: Diagram showing cards and devices.

The devices include:

You can type the following command to list the devices that are on your system:
ls /dev/snd

The resulting list includes one control device for every sound card, starting from card 0, as well as the PCM and mixer devices for each card.

Last modified: 2014-05-14



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