A method and apparatus for canceling an echo in audio communication is disclosed. The
method comprises receiving an audio signal from a network and subsequently detecting a …

A conditioning circuit for use with a microphone 224 placed near a loudspeaker 206 has
microphone-in 225 and speaker-line 208 input terminals, an echo canceller circuit (212 …

(57) ABSTRACT A two microphone noise reduction system is described. In an embodiment,
input signals from each of the microphones are divided into subbands and each subband is …

BACKGROUND Acoustic Echo Cancellation (AEC) is a digital signal pro cessing technology
which is used to remove the acoustic echo from a speaker phone in two-way or multi-way …

In a subband echo cancellation for a multichannel teleconference, received signals x 1 (k), x
2 (k),..., x I (k) of each channel are divided into N subband signals, an echo y (k) picked up …

Abstract A double-talk detector (109) for an acoustic echo canceler (104) of a VoIP terminal
(101) converts (216,226) received far-end signals (212) and transmitted near-end signals …

To achieve an improved convergence behaviour for, eg, echo cancellation there is provided
a digital adaptive filter which includes a filter coefficient update means to successively …

US5949819A - Method and apparatus for training linear equalizers in a PCM modem - Google
Patents US5949819A - Method and apparatus for training linear equalizers in a PCM modem …

Rosenthal (57) ABSTRACT In band-splitting acoustic Signals and Subsequently encoding
and decoding the band-split Signals, band-splitting and band-Synthesizing processing with …

88 BLACK FALCON AVENUE tor authentication verification operation using the credential to
attempt to Verify the authentication of the operator, and allow the prospective operator to …