Digital voice transmission having improved echo suppression

Details Digital voice transmission having improved echo suppression Digital voice transmission having improved echo suppression

H - Electricity

04

M

379/64

H04M 3/18 (2006.01) H04B 3/20 (2006.01)

Patent

CA 1217288

ABSTRACT OF THE DISCLOSURE Digital communication apparatus for improving digital voice transmission over telephone lines by increasing echo suppression is described. The apparatus comprises a transmission gain detector which detects the gain of the near talker signal, a receiver detector for detecting the gain of the far talker signal, and an echo suppression circuit which is partially software implemented, for comparing the gains of the far and near talkers and for suppressing the gain of the lesser value by balancing the impedances in the telephone and in the load balancing circuit.

448667

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