search for: echo_supress

...in double-talk conditions? My impression is that it does not make much difference on the timing to set this parameter less aggressive. Depending on the how loud the near end is talking it may detect double talk but most often it does not detect double talk and near end is suppressed by amount of ECHO_SUPRESS. >> The important parameter for the speech switching is the Pframe. >> Pframe is as you know based on the SNR estimation. However when the >> near-end signal is low compared to the far-end signal (coming from >> the close speaker element) the SNR is not distinctly increase...

...? > > My impression is that it does not make much difference on the timing to > set this parameter less aggressive. Depending on the how loud the > near end is talking it may detect double talk but most often it does not > detect double talk and near end is suppressed by amount of ECHO_SUPRESS. The only thing it *could* have help for is making the clipping less severe, but apparently the proprocessor thinks there's no double-talk. > I think the residual echo estimation is fairly reliable but I do not know > how to use this to improve Pframe and in that way solve our main prob...

Hi Jean-Marc > Can you explain what you mean here by "speech switching" By speech switching I mean the adaption of "gain2" when near-end or far-end is talking. What is important is that the timing is good and that the gain is low/high while far/near-end is talking. By timing I mean that the "gain2" should remain low until all far-end talk is final and that the