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Thread: Alsa ladspa pcm plugin "Unknown PCM ladspa"

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  1. #1
    Join Date
    Jan 2009
    Location
    Washingtion, USA
    Beans
    27
    Distro
    Ubuntu 9.10 Karmic Koala

    Alsa ladspa pcm plugin "Unknown PCM ladspa"

    I've been playing around with the /etc/asound.conf file for a couple of days now and I ran into a problem when I tried to use the ladspa plugins.

    I copied the example from http://alsa.opensrc.org/index.php/Ladspa_(plugin)

    Code:
    pcm.ladspa {
        type ladspa
        slave.pcm "plughw:0,0";
        path "/usr/lib/ladspa";
        plugins [
            {
                label delay_5s
                input {
                    controls [ 0.8 0.3 ]
                }
            }
        ]
    }
    after I put that in my /etc/asound.conf file I restarted Alsa
    Code:
    sudo /etc/init.d/alsa-utils restart
    and then I ran
    Code:
    aplay -Dplug:ladspa test.wav
    to test it and I recieved the following output
    Code:
    ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM ladspa
    aplay: main:590: audio open error: File exists
    Any help would be appreciated
    Last edited by samuelhug; August 26th, 2009 at 09:32 PM.

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