Nikhil Nair wrote: > Hi, > > I'd like to try using a good quality microphone and a set of PC speakers > (in the first instance) to create a powerful speakerphone; if I get that > working, I'll probably try more elaborate audio equipment. >
Interesting... After playing with - and being very impressed by the OSLEC Echo canceller - my business partner and I had an idea about using it as a module that could be plugged into ALSA (The Linux Sound Architecture) so it could be used with various audio devices. It is just a pipe dream at this moment however. The biggest issue I can see is the delays. OSLEC and the other echo cancellers in Zaptel are Line Echo Cancellers and as such deal with with very short delays. Acoustic echo Cancellation needs to handle far longer delays potentially... I use the Polycom Communicator C100s desktop speaker/mic on Linux, and despite the fact that Polycom integrate "most" of their EC software in the Windows Driver, it works very well with the OSLEC canceller on the line side. Take a look at the OSLEC package (http://www.rowetel.com/ucasterisk/oslec.html) and maybe try and get in touch with David Rowe - he is very approachable and very knowledgeable on this subject. HTH Alan -- The way out is open! http://www.theopensourcerer.com _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
