Re: ogle 0.9.2 sound

Mon Dec 08 2003, Keith wrote:
> * H}kan Hjort <[email protected]> [08/12/2003 0423EST]:
> > Mon Dec 08 2003, Keith wrote:
> > > My sound hardware consists of an SB Live and left/right speakers.
> > > Drivers are alsa-1.0.0rc2.  Does anyone have any tips for pumping up the
> > > volume in the software?
> > > 
> > This rather sounds like a bug in the ALSA drivers, though I know that
> > bjorn made some changes to this the ALSA support not to long ago.
> > Is this a new problem with 0.9.2 or did the same thing happen with 0.9.1?
> 
> I don't know if it happens with 0.9.1 too because I've never tried
> 0.9.1.  :)  However I can certainly give it a go.
> 
> What I do know, though, is that I do not have this low-volume sound
> problem with other sound apps (neither those that use ALSA natively or
> those that use OSS).
> 
> I will try 0.9.1 later today.

Sorry, just ignore me... I answered the wrong email ;)

Many DVD just have low average volume, this is because the audio mix
has a very wide dynamic, I.e. a large difference between the soft/low
sounds (wispers, backgound noice) and the loud/high sounds
(explosions, gun shots).

There are two options within Ogle that affects the sound mixing/volume.
Other than that use the normal mixer (aumix / volume control) and/or
you amplifier control.

See 'man oglerc' for things you can change in the config file.
Here are the passages for the two volume options:

<downmix_level>
Is used to multiply the samples when downmixing from multichannel
sound to stereo. For a full 5.1 track the value should be somewhere
around 1.5 if you want to increase the volume a bit. Be aware that
using this setting can result in clipping if values larger than 1.0
are used. This has no effect on stereo tracks. Values lower than 1.0
will decrease the volume.

<drc>
This will turn on dynamic range compression if set to 'yes'. DRC will
lower the volume of loud sounds and raise the volume for soft sounds.


-- 
Håkan Hjort