Re: [AVT] Sound Level Indicators

[David R Oran <oran at cisco.com>]

On Jun 19, 2009, at 12:08 PM, Alan Clark wrote:

> A parallel problem is the control (rather than indication) of volume  
> and
> noise suppression in VoIP calls.  911 operators find that sometimes  
> they do
> want noise suppression and sometimes they don't.  Noise suppression  
> can be
> helpful when they are trying to understand a caller in a noisy  
> background
> environment however it can also suppress background noises that can  
> help to
> understand the emergency situation (e.g. if they hearing kids  
> laughing in
> the background the call may be a prank (which does happen quite  
> frequently)
> but other sounds may indicate how serious a problem is or provide  
> location
> information).
I would think the right mechanism for this would be CCM (Codec Control  
messages), not header extensions.

> Alan
>
>
>
> On 6/19/09 11:46 AM, "Colin Perkins" <csp at csperkins.org> wrote:
>
> > On 15 Jun 2009, at 15:35, Emil Ivov wrote:
> > > We have just submitted the following draft:
> > >
> > > http://www.ietf.org/internet-drafts/draft-ivov-avt-slic-00.txt
> > >
> > > The draft proposes a solution for a problem that's been extensively
> > > discussed on the dispatch mailing list during the past few weeks. It
> > > concerned a means of transporting sound level in conferences in a  
> > > way
> > > that would allow presenting it to the user and extending the active
> > > speaker concept.
> >
> >
> > I haven't been following dispatch, but this looks like a good use of
> > the RTP header extension mechanism.
>
>
>
> _______________________________________________
> Audio/Video Transport Working Group
> avt at ietf.org
> https://www.ietf.org/mailman/listinfo/avt

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