Apparatus and method of estimating echo path delay
Apparatus and method of time delay estimation
Apparatus for removing echo from speech signals with...
Apparatus for sidetone damping
Apparatus of a digital echo canceller and method therefor
Arrangement for communication with a subscriber
Arrangement for suppressing an interfering component of an...
ASR talkoff suppressor
Audio signal processor and method therefor for substantially red
Automatic gain control for an adaptive finite impulse...
Band-by-band full duplex communication
Band-energy near-end echo reducer for tonal signalling detectors
Base band echo cancellation using laguerre echo estimation
Call control of ancillary telecommunications equipment using...
Circuit and method of double talk detection for use in handsfree
Circuit arrangement for the analogue suppression of echoes
Circuit configuration for two-wire/four-wire conversion
Circuit for removing in-band FSK signals without muting of...
Circuit method and system for transmitting information
Combined parallel adaptive equalizer/echo canceller