Echo canceler coefficient update apparatus and method

Echo canceling apparatus, telephone set using the same, and...

Echo cancellation device for cancelling echos in a...

Echo cancellation in digital data transmission system

Echo canceller

Echo canceller

Echo canceller and method of echo cancellation using an NLMS...

Echo canceller employing dual-H architecture having improved...

Echo canceller employing dual-H architecture having improved...

Echo canceller ensuring further reduction in residual echo

Echo canceller having improved noise immunity

Echo canceller having improved non-linear processor

Echo canceller having improved non-linear processor

Echo canceller in a communication system at a terminal

Echo processor generating pseudo background noise with high...

Echo removing apparatus

Echo removing apparatus