Yes On Thursday, June 25, 2015, Chris Mandra <mandra@gmail.com> wrote:
If the moh in a conf is stereo then the conf is stereo, right?
On Thursday, June 25, 2015, Anthony Minessale <anthony.minessale@gmail.com <javascript:_e(%7B%7D,'cvml','anthony.minessale@gmail.com');>> wrote:
FreeSWITCH will not do mono one direction and stereo another. For simplicity sake forget the distinction of stereo where the channels are separate and mono duped into stereo. If the chrome asks for stereo, fs will do interleaved stereo both ways. Chrome will send from a stereo mic if echo can is off or it will double the mono signal to stereo.
If you call the conference with mono and conference is set to 2 channels it will convert it accoringly.
If you are tapping the write stream and its not stereo interleaved audio, then the channel is not operating in stereo mode. You can tell by playing an obvious stereo file in the conference and listen with stereo headphones.
On Thursday, June 25, 2015, Chris Mandra <mandra@gmail.com> wrote:
Yeah, Chrome sums all to mono unless you kill auto echo cancellation. So, it seems like you're telling me that if the conference is set to stereo, there's no reason I should be seeing 960 samples / 20ms instead of 1920 samples / 20 ms. When I first connect I see 1920, and then it switches to 960 sometime after I see the execute conference command in the cli. Is there an obvs reason why that would happen?
On Thursday, June 25, 2015, Michael Jerris <mike@jerris.com> wrote:
We have support for stereo, we don't have support for 2 channel mono (ie multiple m=audio lines in sdp). Chrome doesn't either to my knowledge. we do allow receiving mono and sending stereo, we do this all day long.
On Thursday, June 25, 2015, Chris Mandra <mandra@gmail.com> wrote:
Just a followup - Does freeswitch test for stereo? Does it differentiate between two channel mono and true stereo? If in the web RTC client SDP it's set so that it's sending mono and receiving stereo, what happens then? Does the core generally allow for that kind of asymmetry? I know that chrome sends mono bc of AEC. thanks, chris
On Tue, Jun 23, 2015 at 10:03 PM, Chris Mandra <mandra@gmail.com> wrote:
Thanks Anthony. Question: what if in the web RTC client SDP you have it set so that you are sending mono and receiving stereo. What happens then? Does the core allow for that kind of asymmetry? It must, right, because, for instance, I was sending a mono stream (or perhaps dual mono) and hearing stereo in the conference on Friday. Thanks, chris
On Tuesday, June 23, 2015, Anthony Minessale < anthony.minessale@gmail.com> wrote:
> If you call in and negotiate stereo, it uses stereo, if you try to > play a mono audio stream it will resample and or mux it appropriately. > If you call in with mono to mod_conference in stereo mode it will > up-sample the input and the core will down-sample the output. > > If you are not using our verto demo with the stereo checked and > calling with opus, there are not many other ways to turn stereo on. > > > > On Tue, Jun 23, 2015 at 5:46 PM, Chris Mandra <mandra@gmail.com> > wrote: > >> Hi Anthony - thanks for the info. >> So, "channels" is already set to 2 in >> conf/autoload_configs/conference.conf.xml >> >> <profile name="video-mcu-stereo"> >> >> <param name="domain" value="$${domain}"/> >> >> <param name="rate" value="48000"/> >> >> <param name="channels" value="2"/> >> >> <param name="interval" value="20"/> >> >> <param name="energy-level" value="200"/> >> >> >> Does freeswitch test for actual stereo (as opposed to two channel >> mono) and if it sees 2 chan mono does it downsample to mono? >> >> thanks! >> >> chris >> >> On Tue, Jun 23, 2015 at 6:26 PM, Anthony Minessale < >> anthony.minessale@gmail.com> wrote: >> >>> Yes its interleaved. >>> >>> If you are calling into a conference you will have to run the >>> conference in stereo or the channel will be downsampled to mono to match. >>> Set channels to 2 in the mod_conference profile. >>> >>> >>> >>> >>> On Tue, Jun 23, 2015 at 5:21 PM, Chris Mandra <mandra@gmail.com> >>> wrote: >>> >>>> Hi guys, I have another question about freeswitch, conferences >>>> and stereo. >>>> >>>> When I make a webrtc call into 3500 on my freeswitch server, >>>> mod_ladspa is reporting the number of samples as 1920 (20 ms stereo >>>> interleaved I assume) fine for a few seconds, and then the number of >>>> samples drops to 960 (20 ms mono) Any idea why this might be happening? >>>> >>>> Also, I have been assuming that stereo in freeswitch is >>>> interleaved - is that the case? Is that assumption incorrect? If not >>>> interleaved, how does fs handle stereo. >>>> >>>> >>>> thanks! >>>> chris >>>> >>>> >>>> >>>> _________________________________________________________________________ >>>> Professional FreeSWITCH Consulting Services: >>>> consulting@freeswitch.org >>>> http://www.freeswitchsolutions.com >>>> >>>> Official FreeSWITCH Sites >>>> http://www.freeswitch.org >>>> http://confluence.freeswitch.org >>>> http://www.cluecon.com >>>> >>>> FreeSWITCH-users mailing list >>>> FreeSWITCH-users@lists.freeswitch.org >>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >>>> UNSUBSCRIBE: >>>> http://lists.freeswitch.org/mailman/options/freeswitch-users >>>> http://www.freeswitch.org >>>> >>> >>> >>> >>> -- >>> Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬ >>> >>> ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞ >>> http://twitter.com/FreeSWITCH >>> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+ >>> <http://freeswitch.org/g+>* >>> >>> ClueCon Weekly Development Call >>> [image: ☎] sip:888@conference.freeswitch.org [image: ☎] >>> +19193869900 >>> >>> ClueCon Testimonials <https://www.youtube.com/watch?v=9XXgW34t40s> >>> ClueCon This Summer <https://www.youtube.com/watch?v=NLaDpGQuZDA> >>> >>> >>> _________________________________________________________________________ >>> Professional FreeSWITCH Consulting Services: >>> consulting@freeswitch.org >>> http://www.freeswitchsolutions.com >>> >>> Official FreeSWITCH Sites >>> http://www.freeswitch.org >>> http://confluence.freeswitch.org >>> http://www.cluecon.com >>> >>> FreeSWITCH-users mailing list >>> FreeSWITCH-users@lists.freeswitch.org >>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >>> UNSUBSCRIBE: >>> http://lists.freeswitch.org/mailman/options/freeswitch-users >>> http://www.freeswitch.org >>> >> >> >> >> -- >> mandra >> c:410.258.5281 >> >> >> _________________________________________________________________________ >> Professional FreeSWITCH Consulting Services: >> consulting@freeswitch.org >> http://www.freeswitchsolutions.com >> >> Official FreeSWITCH Sites >> http://www.freeswitch.org >> http://confluence.freeswitch.org >> http://www.cluecon.com >> >> FreeSWITCH-users mailing list >> FreeSWITCH-users@lists.freeswitch.org >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> UNSUBSCRIBE: >> http://lists.freeswitch.org/mailman/options/freeswitch-users >> http://www.freeswitch.org >> > > > > -- > Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬ > > ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞ > http://twitter.com/FreeSWITCH > ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+ > <http://freeswitch.org/g+>* > > ClueCon Weekly Development Call > [image: ☎] sip:888@conference.freeswitch.org [image: ☎] > +19193869900 > > ClueCon Testimonials <https://www.youtube.com/watch?v=9XXgW34t40s> > ClueCon This Summer <https://www.youtube.com/watch?v=NLaDpGQuZDA> >
-- mandra c:410.258.5281
-- mandra c:410.258.5281
-- mandra c:410.258.5281
-- Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬
☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞ http://twitter.com/FreeSWITCH ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+ <http://freeswitch.org/g+>*
ClueCon Weekly Development Call ☎ sip:888@conference.freeswitch.org ☎ +19193869900
ClueCon Testimonials <https://www.youtube.com/watch?v=9XXgW34t40s> ClueCon This Summer <https://www.youtube.com/watch?v=NLaDpGQuZDA>
-- mandra c:410.258.5281
-- Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬ ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞ http://twitter.com/FreeSWITCH ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+ <http://freeswitch.org/g+>* ClueCon Weekly Development Call ☎ sip:888@conference.freeswitch.org ☎ +19193869900 https://www.youtube.com/watch?v=9XXgW34t40s https://www.youtube.com/watch?v=NLaDpGQuZDA
