Hi list,
I am trying to use a LADSPA plugin (the multiband equalizer - 1197)
system-wide via the /etc/asound.conf file. I want to use my second
sound card for the output.
This is my current asound.conf
defaults.pcm.rate_converter "samplerate_best"
pcm.!default {
type plug
slave.pcm {
type dmix
ipc_key 1024
slave {
pcm "hw:1,0"
# period_size 1024
# buffer_size 16384
rate 48000
}
}
}
Although this correctly outputs the sound to the second card, I have to
use the LADSPA plugin within each player if it supports it which I want
to avoid.
I modified the asound.conf to the following as suggested in some Amarok
wiki which always gives the sound to my first soundcard...
defaults.pcm.rate_converter "samplerate_best"
pcm.ladspa {
type ladspa
slave.pcm "plughw:1,0";
# rate 48000;
path "/usr/lib/ladspa";
plugins [
{
# label mbeq_1197
id 1197
input {
# controls [ 6.8 2.5 0.0 -2.0 -3.0 -3.0 -4.0 -5.0 -4.0 -3.0 0.0
3.0 6.0 9.6 13.0 768.0 ]
controls [ 6 2 0 -2 -3 -3 -4 -5 -4 -3 0 3 6 9 13 ]
}
}
]
}
pcm.!default {
#pcm.multi_eq {
type plug
slave.pcm ladspa
}
Then I tried the following which gives me an error with aplay;
defaults.pcm.rate_converter "samplerate_best"
pcm.ladspa {
# pcm
type ladspa
slave.pcm "plughw:1,0";
rate 48000;
path "/usr/lib/ladspa";
plugins [
{
# label mbeq_1197
id 1197
input {
# controls [ 6.8 2.5 0.0 -2.0 -3.0 -3.0 -4.0 -5.0 -4.0 -3.0 0.0
3.0 6.0 9.6 13.0 768.0 ]
controls [ 6 2 0 -2 -3 -3 -4 -5 -4 -3 0 3 6 9 13 768 ]
}
}
]
}
#pcm.!default {
pcm.multi_eq {
type plug
slave.pcm ladspa
}
am@p:~$ aplay -Dplug:multi_eq /music/one.mp3
ALSA lib pcm_ladspa.c:1771:(_snd_pcm_ladspa_open) Unknown field rate
aplay: main:545: audio open error: Invalid argument
The LADSPA plugins are fine, they are in the path specified and working
correctly.
What am I doing wrong?
TIA
AM
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