Dear all, I am trying to work with AEC in pjmedia, but I can't make it work Maybe I am mistaken with the files that I should provide the program. I give an audio file as follows, play is a file which says "hello" rec is a file which says "how are you" but has the same "hello" as a background. It is mixed. (the background sound has around 100 ms delay) I expect the output be an echo-free version of file rec, a "how are you" without any echo. Is my settings OK? Please help, Saeed -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20121216/032c167a/attachment-0001.html>