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Hi Jean-Marc and all others! I am having some troubles with the echo cancellation feature of speex in a voip project. I have two threads, one for sound input and one for sound output. In the output thread, I call speex_echo_playback(). or every frame sent to the sound card. In the input thread, I call speex_echo_capture() for every frame captured from the sound card. Also, I do

Peter Vestberg a ?crit : > The problem seems to be that the sound output thread (and thus > speex_echo_playback()) sometimes executes three frames/"iterations" > before the sound input thread (and thus speex_echo_capture()) comes in. > How do I deal with this problem? I suspect I cannot r...

Thanks for your quick response. Do you know how many playback frames that would be considered "ok" to buffer up in this scenario? I've tested the speexclient application and got similar results. There isn't any option to the playback/capture-mechanism for adjusting the buffer size? It feels like doing my own buffering would simply be a copy paste of your buffering but with a

Hi All We are working on an ARM-based speaker phone application where the speaker and microphone is placed roughly 8 cm from each other (similar to this one: http://www.voipsupply.com/images/CHAT50SPLASH.jpg). We are using Speex AEC and preprocessor to handle the acoustic echo. The AEC typically contribute with ERLE of 15-20 dB which should be as expected from the algorithm. Additionally we need

Sorry, got the subject wrong in the last mail. My e-mail client is playing games with me...