Le mercredi 21 novembre 2007 à 09:41 +0000, Alan Lord a écrit : > Damien Sandras wrote: > > > > > That is a good idea. > > > > > > Notice we could also reuse echo cancellation algorithms from Asterisk. > > Hi, forgive the intrusion. > > I had a similar idea a week or so ago but am not a software engineer. I > built and installed Asterisk on my LFS (Linux From Scratch) server. I > have a cheap analogue PSTN (x100p) card and the standard EC with the > Zaptel modules didn't do much - echo was bad... > > I installed the OSLEC canceller from David Rowe > (http://www.rowetel.com/ucasterisk/oslec.html) which is simply a kernel > module that interfaces to the zaptel module. It is brilliant! Worked a > treat... > > On my desk I use the Polycom Communicator (a handsfree combined > mic/speaker) USB audio device. And although most of the EC and noise > suppression technology is apparently in their Windows only drivers, it > works "OK" on my Ubuntu Desktop, but I do have some problems with echo. > > I was wondering if it would be possible to use the OSLEC module in a > more "generic" way (perhaps within ALSA) so that it could be used to > provide EC services to almost any audio device or as a "driver" simply > for my Polycom C100s... Is this a sensible idea?
It is certainly worth having a look. The algorithm is probably good and could certainly be used in ekiga. However, I fear the module itself is probably very "zapata" specific and thus not usable with standard sound applications. Very interesting link though... -- _ Damien Sandras (o- //\ Ekiga Softphone : http://www.ekiga.org/ v_/_ NOVACOM : http://www.novacom.be/ FOSDEM : http://www.fosdem.org/ SIP Phone : sip:[EMAIL PROTECTED] _______________________________________________ ekiga-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/ekiga-list
