Re: [GnomeMeeting-list] quiet audio

[Arthur Kahlich <art kahlich com>]

Since you now have alsa, you should have also gotten 
alsa-utils-0.9.0beta12, which will include a utility called amixer 
(this is a command line program).  If you have only one audio 
card, enter:

amixer contents

to get a listing of controls available on your card and their current 
settings.   The one you are looking for is something like this on my 
system:

numid=13,iface=MIXER,name='Mic Boost (+20dB)'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off

I then enter:

amixer cset numid=13 on

to turn on the mic boost.  gmix doesn't have any control for this, 
but on certain sound card, microphone and people combinations 
it is essential in order to get any decent sound level.

If you knew all of this before hand, then perhaps this is a useful 
tutorial for someone else.  I haven't found it anywhere else in 
the mailing list, so I thought I would write up at least a sound 
card specific example myself.  In another life I did audio code 
in MS Windows for a now defunct internet telephony company.  
Making our client application capable of controlling Mic Boost in 
that evironment was a mess because it was sound card driver 
specific and many manufacturers did it differently, but having the 
capability was absolutely necessary for good quality voice in 
many cases.

Hope this helps,

Art

On Apr 24,02 01:42:47 PM Meredydd wrote:
> Already did, and no it doesn't. We have common codecs, we opened both send 
> and receive channels, but I suspect it's his audio driver now, looking at my 
> bandwidth meter. I'll ask again...
> 
> Meredydd
> 
> 
> On Wednesday 24 April 2002 22:12, Damien Sandras wrote:
> > http://www.gnomemeeting.org/faq.php#AEN272
> >
> > Read this part of the FAQ and ask again if it doesn't fix your problem
> >
> > :)
> >
> > On Wed, 2002-04-24 at 22:06, Meredydd wrote:
> > > OK, I went away, got ALSA (and the assistance of someone else using
> > > Gnomemeeting). I now have very quiet audio when talking to him. I can do
> > > normal recording and playback at a decent volume, but with Gnomemeeting I
> > > come out ridiculously quiet. Gnomemeeting, OSS mixers, and alsamixer all
> > > agree that the mike volume is set to full, and as I say,
> > > recording/playback works fine.
> > >
> > > Any ideas, anyone?
> > >
> > > Thanks,
> > > Meredydd