Hello Dennis, I encountered same problem as Mohammed Sulaiman while I use AEC in speex. It is quite encouraging that you implement it successfully. Could you describe your implementation in detail? How do you synchronize speaker and microphone, by hardware or by software? It is quite critical for me. Thanks a lot for your help. Myron Tan _________________________________________________________________ ?????????????????????????????? http://piao.live.com/?form=PANER01 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20090212/421b7272/attachment.htm