- From: Bernard Aboba <Bernard.Aboba@microsoft.com>
- Date: Wed, 29 Jan 2014 14:14:24 +0000
- To: Emil Ivov <emcho@jitsi.org>, Justin Uberti <juberti@google.com>
- CC: Roman Shpount <rshpount@turbobridge.com>, Peter Thatcher <pthatcher@google.com>, "public-orca@w3.org" <public-orca@w3.org>
Emil said: +1. While polling is obviously much better than nothing at all, having a change event would be quite convenient. With regard to energy levels, there are two main use cases: 1. acting on changes of the current speaker (e.g. in order to upscale their corresponding video and thumbnail everyone else) 2. showing energy levels for all participants [BA] I believe that the polling proposal could address need #2 by delivering a list of CSRCs as well as an (averaged) level, but I'm not sure about #1. #1 is about timely dominant speaker identification, presumably without false speaker switches. To do this well, you may need to do more than firing an event based on changes in a ranked list of speakers based on averaged levels; better approaches tend to actually process the audio. For example, see http://webee.technion.ac.il/Sites/People/IsraelCohen/Publications/CSL_2012_Volfin.pdf
Received on Wednesday, 29 January 2014 14:15:11 UTC