Arch Linux

allbluedream

Member

Registered: 2008-04-06

Posts: 155

mpd + bs2b solution?

I use headphone a lot, so I think maybe bs2b would help a bit. My current music setup is mpd with pulseaudio. The problem is: if I use ladspa bs2b as ALSA plugin, I lose the ability to mix sounds; and pulseaudio's module-ladspa-sink does not yet handle the bs2b plugin. My current best option would be to ditch mpd and use audacious instead, but I do love mpd and am unwilling to do that. Do you have any suggestions?

Wintervenom

Member

Registered: 2008-08-20

Posts: 1,011

Re: mpd + bs2b solution?

I lose the ability to mix sounds [...]

Even with telling ALSA to use dmix?

allbluedream

Member

Registered: 2008-04-06

Posts: 155

Re: mpd + bs2b solution?

Thanks for the reply. Dmix doesn't seem to work. Maybe it's because I'm using PulseAudio by default, and this is causing a conflict. The reason for choosing PulseAudio is manifold. MPD with alsa tends to use a lot of CPU power, which looks silly on a laptop; and mplayer somehow just does not play well with alsa on my box... I did try OSS before but there were a lot of sound artifacts... I'm feeling like really out of options.

Last edited by allbluedream (2010-06-08 00:47:17)

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,362

Re: mpd + bs2b solution?

Try telling the ladspa to output to the pulse output, but I think there'll be some bugs along the way. What you're having is the ladspa taking control of hw:0

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allbluedream

Member

Registered: 2008-04-06

Posts: 155

Re: mpd + bs2b solution?

How do I pass the ladspa output through pulse?

My /etc/asound.conf

pcm.crossfeed {
  type plug
  slave.pcm "ladspa"
}

pcm.ladspa {
  type ladspa
  slave.pcm "plughw:0,0";
  path "/usr/lib/ladspa";
  plugins [
    {
      label bs2b
      input {
        controls [ 700 4.5 ]
      }
    }
 ]
}

and related part in /etc/mpd.conf

audio_output {
        type                    "alsa"
        name                    "ALSA crossfeed"
        device                  "crossfeed"
}

Last edited by allbluedream (2010-06-08 07:37:23)

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,362

Re: mpd + bs2b solution?

Try changing the slave to "pulse".

---

Allan-Volunteer on the (topic being discussed) mailn lists. You never get the people who matters attention on the forums.
jasonwryan-Installing Arch is a measure of your literacy. Maintaining Arch is a measure of your diligence. Contributing to Arch is a measure of your competence.
Griemak-Bleeding edge, not bleeding flat. Edge denotes falls will occur from time to time. Bring your own parachute.

brebs

Member

Registered: 2007-04-03

Posts: 3,742

Re: mpd + bs2b solution?

Dmix doesn't seem to work

See thread for my example config.

allbluedream

Member

Registered: 2008-04-06

Posts: 155

Re: mpd + bs2b solution?

Thanks, ngoonee, I tried slave.pcm "pulse", but it doesn't work.

brebs, I actually copied one of your configs around the forum, and I'm very thankful. However I'm still quite (or more) confused by alsa. Does dmix work with pulseaudio?