HI: Nowadays ,I am developing an IP phone on ARM platform , and the echo occur while talking. I active the speex ec filter ,but no effective . I googled this problem ,and found your mail " Fri Sep 3 18:16:55 PDT 2010 " relative this issue . I want to know what's the problem in the moment, is the speex-ec filter invalid or not? You said that the parameters maybe wrong, what's the correct parameter ? can you get some sample? my situation is 1-2 seconds while the echo happens, I set the ec_tail_len = 1500, ec_delay=1500,ec_framesize = 160 (my audio params is 8K ,16bits stereo). Any advices is appreciated, thank you in advance. Best Wishes! "Go forward, Just chase your dream!" -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20130318/8cda936d/attachment.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 5365 bytes Desc: not available Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20130318/8cda936d/attachment.jpeg