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Thread: How do I find out an ALSA device's code name/description thing?

  1. #1
    Join Date
    Feb 2007
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    New York
    Beans
    894
    Distro
    Ubuntu 9.10 Karmic Koala

    How do I find out an ALSA device's code name/description thing?

    I've searched over and over and can't find any explanation of what "hw:0,0" means. How do I determine the number of my USB audio card? If I do "alsamixer -c 1" it opens the USB card's volume control, but that really doesn't help me. Where are the device names/numbers listed or explained?

    Code:
    > aplay -L
    default:CARD=I82801DBICH4
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        Default Audio Device
    front:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        Front speakers
    surround40:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        4.0 Surround output to Front and Rear speakers
    surround41:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        4.1 Surround output to Front, Rear and Subwoofer speakers
    surround50:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        5.0 Surround output to Front, Center and Rear speakers
    surround51:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4
        5.1 Surround output to Front, Center, Rear and Subwoofer speakers
    iec958:CARD=I82801DBICH4,DEV=0
        Intel 82801DB-ICH4, Intel 82801DB-ICH4 - IEC958
        IEC958 (S/PDIF) Digital Audio Output
    null
        Discard all samples (playback) or generate zero samples (capture)
    default:CARD=default
        USB Audio CODEC , USB Audio
        Default Audio Device
    front:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        Front speakers
    surround40:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        4.0 Surround output to Front and Rear speakers
    surround41:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        4.1 Surround output to Front, Rear and Subwoofer speakers
    surround50:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        5.0 Surround output to Front, Center and Rear speakers
    surround51:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        5.1 Surround output to Front, Center, Rear and Subwoofer speakers
    surround71:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
    iec958:CARD=default,DEV=0
        USB Audio CODEC , USB Audio
        IEC958 (S/PDIF) Digital Audio Output
    "Please remember to do things the Ubuntu way. There is always more than one solution to a problem, choose the one you think will be the easiest for the user. ... Try to think as a green user and choose the simplest solution." — Code of Conduct

  2. #2
    Join Date
    Apr 2008
    Beans
    4,377
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: How do I find out an ALSA device's code name/description thing?

    cat /proc/asound/cards
    PMs will be ignored.

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