Adaptive filter utilizing proportional affine projection...

Adaptive gain control based on echo canceller performance...

Adaptive interference cancellation for ADSL

Adaptive scaling and echo reduction

Adaptive sub-band echo suppressor

ADSL communication system having echo canceller and method...

Analog echo suppressor

Anti-howling circuit detecting howling from effect of...

Anti-howling structure

Apparatus amd method for increasing the intelligibility of a lou

Apparatus and method for adaptively precompensating for loudspea

Apparatus and method for controlling acoustic echo...

Apparatus and method for controlling the operational state of an

Apparatus and method for echo attenuation

Apparatus and method for echo cancellation

Apparatus and method for echo cancellation

Apparatus and method for echo control

Apparatus and method for echo-cancellation

Apparatus and method for reducing the risk of undesirable parame

Apparatus and method for time-alignment of two signals