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...h the library. Are you saying we need to actually hand optimise (modify)the code as well? Did you use assembly language for this? Definitely you have to work on your own to optimize the code. I haven't used assembly so far since the efficiency on WM5/6. Thanks Dennis Liu <dennis.liu@mobidia.com> wrote: I've worked on implementing Speex AEC to smartphone on the exactly same platform as you have. The result is pretty good. I can remove most of the acoustic echo. I'm still tuning the performance to minimize the remaining echo. Here are the key points: 1. You have to sync mi...

Hi, I'm trying to use Speex Echo Canceller for mobile device. The AEC works well so far. However, I want to know how to remove reverberation significantly. I noticed it's not implemented yet in Speex AEC. Are you going to implement it in next version? Could you provide some ideas how to handle reverberation on current version? Thanks in advance. Sincerely, Dennis

Hi Jean-Marc, I want to know the possibility of expanding frame size from 160 to 320 for narrow band. What is the side-effect if do so? How many changes involved for the current code? Thanks ahead. BRs, Dennis -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20080213/9cbdd667/attachment.htm

Thank you so much for your quick reply. It looks quite easy to change it. But, how about those codebook and excite table? I notice them have been fixed as the length of 160. Thanks again, Dennis -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Wednesday, February 13, 2008 4:03 PM To: Dennis Liu Cc: speex-dev@xiph.org Subject: Re: [Speex-dev] Can

Thanks Jean-Marc. I do want to change Speex frame size to 320. In this case, I've changed frame size in init and modes (include framesize and subframesize). However, the audio quality becomes bad. It seems something else needs to be changed as well. Could you give a clue? Thanks, Dennis -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: