search for: echocard1

...nstop.com> writes: > > > Daniel, > I recommend you to start from a simple case and gradually progress > towards your goal. > Can you make things work with the "Speex in a Disco" (Example 6) > testcase at http://ns.surfnonstop.com/~bandit/speex/echocard1/ ? > These files were captured via a stereo soundcard, so the channel > sample clocks are exactly synchronized, making for a simple baseline > testcase for AEC. I'm trying to run current speex with your test program on these samples, and while the quality is quite nice, it...

The echo suppression in SVN is shaping up quite nicely! I have also observed some - occasional, apparently data-dependent - misbehaviour in AGC. http://www.surfnonstop.com/~bandit/speex/echocard1/

Hi, I am using speex-1.2 beta1 version. When I am using sample files from http://www.surfnonstop.com/~bandit/speex/echocard1/ ,example 6, as input to mdf through testecho the output is fine However when I am recording the signals in echocancel.cxx in OpalEchoCanceler::ReceivedPacket taking speaker signal from echo_buf and mike signal from ref_buf, echo cancellation is not affective. Can you please tell me how exact...

> I am using speex-1.2 beta1 version. When I am using sample files from > http://www.surfnonstop.com/~bandit/speex/echocard1/ ,example 6, as input > to mdf through testecho the output is fine That's a good start indeed. > However when I am recording the signals in echocancel.cxx in > OpalEchoCanceler::ReceivedPacket taking speaker signal from echo_buf and > mike signal from ref_buf, echo cancellation i...

Hi, Arun and me are working on a echo-canceler module for pulseaudio build around speex. When using the preprocessor's echo filter, specifically in combination with denoise and AGC, it's unclear whether these have to run before or after the AEC. Right now we've got one instance of speex_preprocessor doing AGC and denoise running before the echo canceler; and a second for echo

...>> >> Daniel, >> I recommend you to start from a simple case and gradually progress >> towards your goal. >> Can you make things work with the "Speex in a Disco" (Example 6) >> testcase at http://ns.surfnonstop.com/~bandit/speex/echocard1/ ? >> These files were captured via a stereo soundcard, so the channel >> sample clocks are exactly synchronized, making for a simple baseline >> testcase for AEC. > I'm trying to run current speex with your test program on these samples, > and while the q...

Hello Jean-Marc, I solved the variable delay problem, but I still have trouble with speex_echo_cancel(). When i try testecho.c with clean speech for far-end input and same speech with attenuation, a bit of reverb and 50-150 ms delay, all this done in sound editor, for mic input, i get 5-8 db attenuation. But when i use the same speech played and recorded for mic input, i see about 5 db of

...Daniel, > >> I recommend you to start from a simple case and gradually progress > >> towards your goal. > >> Can you make things work with the "Speex in a Disco" (Example 6) > >> testcase at http://ns.surfnonstop.com/~bandit/speex/echocard1/ ? > >> These files were captured via a stereo soundcard, so the channel > >> sample clocks are exactly synchronized, making for a simple baseline > >> testcase for AEC. > > I'm trying to run current speex with your test program on these samples,...

Simply to say, in a quiet room, you can play a impulse signal and then find it's impulse response signal from the microphone. For example, if the delay between the impulse signal and its response signal range from 500 to 3000 cycles, you can buffer the far-end signal to 0-300 cycles and set the filter length to 4000. It is also called to align far-end signal and near-end signal. BTW: Speex