A METHOD TO REDUCE ACOUSTIC COUPLING IN AUDIO CONFERENCING SYSTEMS

摘要

A method to reduce acoustic coupling in an audio conferencing system having a loudspeaker and a plurality of microphones, comprising detecting the presenc e of one of either a source of near-end signal or a source of far-end signal source relative to the audio conferencing system, and in the event of detecting a source of near-end sign al then processing the near-end signal with high directivity towards the near-end source, and i n the event of detecting a source of far-end signal or double-talk then processing the far- end signal with high coupling characteristics between the loudspeaker and microphones.