[sip-comm-dev] echo cancellation / more multiple concurrent conversation fun (HELP)

Koch Michael MKoch at rowa.de
Thu Nov 15 14:39:17 CET 2007


> Hi Michael,
> 
> Sorry for the delay! Here is what we have done about echo 
> cancellation.
> http://www.sip-communicator.org/echo/sip-communicator-echo.tgz
> http://www.sip-communicator.org/echo/JNI2.tgz
> 
> The first archive is the modified sip-communicator source I 
> was working 
> on. The second one contains source for the native part.
> Most of the modifications are in MediaControl.java, 
> CallSessionImpl.java 
> and in the packages 
> net.java.sip.communicator.impl.media.codec.audio.echo and 
> net.java.sip.communicator.impl.media.codec.audio.speex.impl.Sp
> eexLib.java
> Let me know if you have any questions.
> This is working under linux, but I couldn't make it work on 
> windows as 
> there are problems with capturing media.

Thanks, that's great. I'll have look at it.

Cheers
Michael Koch

> Good luck!
> damencho
> 
> Koch Michael wrote:
> > Hi Emil!
> >
> >   
> >> Hello Michael
> >>
> >> Koch Michael wrote:
> >>     
> >>> Hello Emil, Sergei!
> >>>
> >>>       
> >>>> We (mostly Damian actually) have been working on echo 
> >>>>         
> >> cancellation for
> >>     
> >>>> some time now. We have been using the speex utilities for 
> >>>>         
> >> this. So far
> >>     
> >>>> we have managed to get something working on Linux but the 
> >>>>         
> >> situation is
> >>     
> >>>> far from being ready for integration in the source code, and 
> >>>> it doesn't
> >>>> work on Windows or Mac OS X.
> >>>>         
> >>> This sounds really interesting. We need echo cancellation for our
> >>> application, so I could spend time working on it. Do you 
> >>>       
> >> think it would make
> >>     
> >>> sense if I have a go at the code, or would you rather not 
> >>>       
> >> publish it at this
> >>     
> >>> state?
> >>>       
> >> The thing is that it requires substantial modifications in 
> >> the existing
> >> code of the media package so we can't commit it until it's 
> >> fully tested
> >> or else it would probably break everything. I don't know 
> whether we'll
> >> be able to commit soon since the project is on hold at the 
> >> moment, so we
> >> might as well send it to you.
> >>
> >> Let me know if you'd like this.
> >>     
> >
> > Yes, I'd be interested. I'd like to try out if it works for 
> our setup. If
> > yes, I could take the time to work on the code to do it "properly".
> >
> > Regards
> > Michael Koch
> >   
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe at sip-communicator.dev.java.net
> For additional commands, e-mail: 
> dev-help at sip-communicator.dev.java.net
> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3747 bytes
Desc: not available
URL: <http://lists.jitsi.org/pipermail/dev/attachments/20071115/1f2bb8b4/attachment.bin>


More information about the dev mailing list