Hi @ all, I?m trying to do Echo Cancellation with the Speex Library. The only thing I don?t understand is how to proof the input signal delayed with the output signal. Anyone here who could explain this to me? Greetings Karsten -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20081110/29c478da/attachment.htm