Re: [AVT] Sound Level Indicators

[Alan Clark <alan.d.clark at telchemy.com>]

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).

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.