Hi, @Alexei: "The new thing is AEC mechanism sometimes meddles with hardware echo cancellation support providing temporary sound outages. It also provides visible de-synchronization between sound and video channels."
=> Based on what Test did you make this assumption ? Do you have a version of OpenMeetings 2.1 where AEC is enabled and a version where it is disabled or are you just comparing OpenMeetings 2.0 and 2.1 ? What are the exact versions that you are comparing? Cause for me it sounds more like a random idea that AEC could be the root cause for what you describe. It could be also for example that we are using h264 now as video codec or some other parameters that we are using now since the SWF11 migration. Or using enhancedMicrophone (maybe you mean that by the term "AEC" ?). And to be honest: Sound outages for me sounds like the typical stuttering effect that happens when there is a bandwidth issue. I think it makes sense to have at least a config parameter somewhere that enables/disables it. But the config parameter would more switch between two options: Option A: Enable enhanced Microphone and AEC Option B: Use regular Microphone with echoCancellation Flag set to true (I will have to revisit the ActionScript3 docs about this flag, I think its effect on echo is rather minimalistic compared to AEC and the enhancedMicro mode). By doing that you can at least do concrete test use-case and try to reproduce the same problem with the exact same version of OpenMeetings and environment and just switching between the micro options. Sebastian 2013/4/23 Maxim Solodovnik <[email protected]> > @Alexei this definitely can be done in realtime, BUT ... :) > > The setting affects Working microphone so it is impossible to ON/OFF it > while speaking :( > The only option I can see is to add dropdown control to testSetupDialog > (the one with choose camera and test recording). So we can have something > like: > > 1) default system setting (can be moved to Admin->configuration to avoid > rewriting it after each upgrade) > 2) per user setting stored in LocalData (like rememberLogin default cam/mic > etc.) > > using above scheme user can change the setting while entering the room or > "re-sync" audio/video > > What do you think? > > > > On Tue, Apr 23, 2013 at 3:24 AM, Joseph Karwat <[email protected]> > wrote: > > > We tested AEC out-of-the-box. We just installed and ran a meeting in > > OM2.1- Litle or no echo. We then, using the exact same configuration, > > logged in to an OM2.0 server and ran a meeting. We experienced > substantial > > echo. We were both running a PC with Flash echo cancellation on but no > > hardware echo cancelation. > > > > Also for OM2.1 Where do I set the buffer lenghth? Are there any other > > parameters/options I should know about? > > > > > > > > Joseph Karwat | CEO | 415-462-0263 | JellVideo | www.jellnet.com | > > JELL NETWORKS, INC. > > Enterprise Video Collaboration Solutions > > > > Click Here to Register for your JellVideo Collaboration Account > > > > > > > > -----Original Message----- > > From: Alexei Fedotov [mailto:[email protected]] > > Sent: Monday, April 22, 2013 12:49 PM > > To: [email protected] > > Subject: RE: AEC in the new release > > > > Joseph, which devices show improvement? Which buffer length did you use? > > > > I like the suggestion - Maxim, how is it possible to configure AEC in > > realtime? > > On Apr 22, 2013 11:30 PM, "Joseph Karwat" <[email protected]> wrote: > > > > > We have a test OM2.1 server installed at AWS running Unbuntu 12.04. > > > > > > We tested AEC this morning for the first time and it did seem to make > > > the audio work very well. Little if no echo. We still need to test > > > under a wide range of scenarios, but we are encouraged by the > > > performance this morning. > > > > > > If you do make it a configurable setting. It should be an option when > > > setting up the room or allow the individual user to enable/disabe AEC > > > when in a conference room. > > > > > > Making it a system-wide configuration option will delay testing and > > > adoption. > > > > > > We will be conducting further testing of AEC over the next few days > > > and will report back with our findings. Anyone wishing to participate > > > in our AEC testing is encouraged to contact me. > > > > > > > > > Joseph Karwat |415-462-0263 | JellVideo | www.jellnet.com | JELL > > > NETWORKS, INC. > > > Enterprise Video Collaboration Solutions > > > > > > Click Here to Register for your JellVideo Collaboration Account > > > > > > > > > -----Original Message----- > > > From: Alexei Fedotov [mailto:[email protected]] > > > Sent: Monday, April 22, 2013 12:49 AM > > > To: dev; [email protected] > > > Subject: Re: AEC in the new release > > > > > > There are no answers. My point here is that we can be 100% sure that > > > today AEC does not work as expected, and provides distinctive and high > > > quality echo in 100% of situations when users use separate dynamic and > > > microphone systems. > > > > > > The new thing is AEC mechanism sometimes meddles with hardware echo > > > cancellation support providing temporary sound outages. It also > > > provides visible de-synchronization between sound and video channels. > > > > > > If someone has a different experience, please, speak up. > > > > > > So I have two ideas to speak of. 1. Disable AEC in openmeetings > > > releases by default. It takes a simple configuration change to enable > > > it. 2. Later understand when AEC really works, and fix it. > > > > > > Folks, please again let me know if you disagree and have beneficial > > > AEC experience. > > > -- > > > With best regards / с наилучшими пожеланиями, Alexei Fedotov / Алексей > > > Федотов, http://dataved.ru/ > > > +7 916 562 8095 > > > > > > > > > On Thu, Apr 18, 2013 at 11:11 PM, Alexei Fedotov > > > <[email protected]> > > > wrote: > > > > Hello guys, > > > > How AEC (acoustic echo cancellation) works for you in the new > release? > > > > Can anyone share usage experience? > > > > > > > > -- > > > > With best regards / с наилучшими пожеланиями, Alexei Fedotov / > > > > Алексей Федотов, http://dataved.ru/ > > > > +7 916 562 8095 > > > > > > > > > > > > > -- > WBR > Maxim aka solomax > -- Sebastian Wagner https://twitter.com/#!/dead_lock http://www.webbase-design.de http://www.wagner-sebastian.com [email protected]
