A METHOD OF ACCELERATING THE TRAINING OF AN ACOUSTIC ECHO CANCELLER IN A FULL-DUPLEX BEAMFORMING-BASED AUDIO CONFERENCING SYSTEM

摘要

A method and apparatus is set forth for accelerating the total acoustic echo cancellation convergence time in a microphone array full-duplex conferencing system with beamformer. The invention is based on sequentially switching the beamformer to untrained sectors during periods of far-end speech activity and performing real-time cancellation of far-end echo signals from the near-end signals to consecutively adapt and store filter coefficients for the echo canceller corresponding to each sector.