Inventor
FARRELL DAVID S
US7 patents
Patents
7 patentsUS6198819B1Mar 6, 2001
Echo canceller having improved non-linear processor
TELLABS OPERATIONS INC42 citations94
US6031908AFeb 29, 2000
Echo canceller employing dual-H architecture having variable adaptive gain settings
TELLABS OPERATIONS INC20 citations92
US6516063B1Feb 4, 2003
Echo canceller having improved non-linear processor
TELLABS OPERATIONS INC22 citations90
US7200222B2Apr 3, 2007
Echo canceller employing dual-H architecture having variable adaptive gain settings
TELLABS OPERATIONS INC4 citations73
US6614907B1Sep 2, 2003
Echo canceller employing dual-H architecture having variable adaptive gain settings
TELLABS OPERATIONS INC12 citations73
US7450714B2Nov 11, 2008
Echo canceller having improved non-linear processor
TELLABS OPERATIONS INC4 citations71
US7020278B2Mar 28, 2006
Echo canceller having improved non-linear processor
TELLABS OPERATIONS INC10 citations71