Patent ID: 7085374
Filing Date: 2006-08-01
Classification: H04B,H04M

Abstract:
1. A distributed echo canceller, comprising: a system for applying a signal (Ro) to a network, and for receiving a signal (Si, Ro′) from said network, splitting said signal (Si, Ro′) into signals (Si) and (Ro′), the signal (Ro′) being a modified version of the signal (Ro) and the signal (Si) containing an echo of said modified signal (Ro′), and canceling echoes from said signal (Si) using the modified version (Ro′) of said signal (Ro); and at least one device that is remote from the system over said network for (i) receiving and outputting said modified version (Ro′) of the signal (Ro) corrupted by transmission over the network, (ii) receiving a signal (Si) containing an echo of to said modified signal (Ro′), and (iii) combining and transmitting said signals (Si, Ro′) over the network to said system for echo cancellation of said signal (Si) using said modified signal (Ro′).