Hi, I am experimenting with Speex AEC now i need some clarification regarding the input that we provide to Speex. * MiC Frame and Speaker Frame does it required to be synchronize?. If yes, What is the acceptable deviation? * What are factors that i have consider while using Speex AEC? I have a AEC test setup where the real time data is the input to Speex AEC, but i donot see any echo cancellation. The Output Buffer contains same data as input MiC Buffer (With minor modification, probably noise supression) but echo is still present. Why Speex AEC is not removing the echo? In the same test setup i have provided input to AEC from a sample Echo Test PCM Audio file (Created for testing echo canceller), Speex is working as expected there is no echo present in the output of AEC. Please help me in identifying the issue as soon as possible. Thanks in Advance Karthik -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20080822/a9e5a31e/attachment.htm