[mythtv-users] Using ALSA's "Softvol" plugin to create a volume control for SPDIF output?

Paul V. Gratz pgratz at gratz1.com
Sat Dec 3 18:17:27 EST 2005


On Saturday 03 December 2005 04:56 pm, Kevin Kuphal wrote:
> Paul V. Gratz wrote:
> >Hey All,
> >
> >  A little while back someone mentioned that you could use softvol to
> >create a volume control for S/PDIF output. I've been trying to make
> >this work.  I've got S/PDIF output working great (thanks to help from
> >reading this mailing list and a few sites found w/ google) however my
> >receiver is placed in side a thing that does not allow IR access to it
> >w/o opening it.  I'd like to set my receiver's volume at a certain
> >level for normal listening and then use softvol to adjust it down from
> >there when we want to lower it (IE, at night when others are sleeping
> >or whatever). Here is what I tried for my .asoundrc:
> >
> >pcm.spdifvol {
> > type softvol
> > slave.pcm "spdif"
> > control {
> >    name "SPDIF Playback Volume"
> >    card 0
> > }
> >}
> >
> >but I'm not sure how to use this. Any ideas?
>
> Maybe this helps
>
> http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html
>
> Kevin

Yeah, I was looking at this but I wasn't sure how to apply it...
Paul

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