Ciao.
Uh so it 's  it  you have a  a direct uh  Uh , what 's the difference in  If you were trying to construct a linear filter , that would um
I 'm signing off.
Yeah. that would subtract off  the um uh parts of the signal that were the aspects of the signal that were different between the close - talk and the distant. You know , so  so uh um I guess in most echo cancellation  Yeah , so you  Given that um  Yeah , so you 're trying to  So you 'd  There 's a  a distance between the close and the distant mikes so there 's a time delay there , and after the time delay , there 's these various reflections. And if you figure out well what 's the  there 's a  a least squares algorithm that adjusts itself  adjusts the weight so that you try to subtract  essentially to subtract off uh different uh  different reflections. Right ? So let 's take the simple case where you just had  you had some uh some delay in a satellite connection or something and then there 's a  there 's an echo. It comes back. And you want to adjust this filter so that it will maximally reduce the effect of this echo.