Double echo cancelling system

Double talk and echo path change detection in a telephony system

Double talk detection and echo control circuit

Double talk detector for echo canceller and method

Double talk detector, method for double talk detection and...

Dual mode LMS nonlinear data echo canceller

Dual network housing device

Dual voltage, self-monitoring line circuit

Dual-limit current-limiting battery-feed circuit for a digital l

Dynamic echo canceller and parameter selection in telephony syst

Echo canceler

Echo canceler and echo path estimating method

Echo canceler and method for learning for the same

Echo canceler and method thereof

Echo canceler E-side speech detector

Echo canceler employing segment-based reinitialization

Echo canceler for use in communications system

Echo canceler having plurality of adaptive filter circuits

Echo canceler-suppressor speakerphone

Echo canceling method and apparatus in a communication device