Hi, We are developing AEC plugin for our proprietary AEC implementation. We are having 2 sink pads (one for near end and one for far end inputs) and 1 source pad (for AEC output). Audio capture and playback can happen with any of the available plugins. But you have to implement a logic to make sure that the input data to AEC algo is in correct sync. Also is it required to have as minimum delay as possible in capture and playback path to have short tail length. Regards, Viraj <div class="gmail_quote">2009/8/30 Olivier Crête <<a href="mailto:olivier.crete@collabora.co.uk">olivier.crete@collabora.co.uk</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="im">On Sun, 2009-08-30 at 21:16 +0300, Stefan Kost wrote: > rmkart schrieb: > > Hi, > > Is there any AEC (Achoustic echo cancellation) Gstreamer plugin available. > > For this I need to get the input from alsasink and send it to Alsasrc, the > > Alsa component does a buffering within itsself. If I try to apply AEC on > > these buffers then the quality wont be good as the logic is pplies on > > buffers which might not be in syc. Can anyone siggest me any > > ideas/suggestion for this. > > Thanks, > > RK > > There is none I am aware of. If you consider start making one, keep us up-to-date. </div>I started writing one based on libspeexdsp, but I never got it to work properly. The code is at: <a href="http://git.collabora.co.uk/?p=user/tester/gst-plugins-farsight-tester.git;a=tree;f=ext/speexdsp;hb=speexdsp" target="_blank">http://git.collabora.co.uk/?p=user/tester/gst-plugins-farsight-tester.git;a=tree;f=ext/speexdsp;hb=speexdsp</a> Also, my understanding is that the AEC algorithm in speexdsp will only work if the src and the sink are on the same sound card. So it won't work with stuff like USB or Bluetooth speakers or with the microphone on a Webcam. So I kind of gave up on it. -- Olivier Crête <a href="mailto:olivier.crete@collabora.co.uk">olivier.crete@collabora.co.uk</a> ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. <a href="http://p.sf.net/sfu/bobj-july" target="_blank">http://p.sf.net/sfu/bobj-july</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div> -- - Viraj Reality is merely an illusion, albeit a very persistent one.