Patent ID: 7672446
Filing Date: 2010-03-02
Classification: H04M

Abstract:
1. A communication device for connection to a telecommunication network for communicating with at least one distant interlocutor, having at least one loudspeaker and at least one microphone, the communication device comprising: echo processing means for attenuating coupling due to a signal emitted by at least one loudspeaker of at least one other communication device situated close to said communication device, said echo processing means including: (a) a receiver for receiving from said at least one other communication device information representative of a signal emitted by at least one loudspeaker of said at least one other communication device, the receiver being arranged to be responsive to the information via a digital connection distinct from said telecommunication network, all the communication devices being situated in the same premises and connected to one another through digital connections, (b) means for obtaining a piece of information representative of a distance separating a loudspeaker of one of said at least one other communication device from a microphone of said communication device, (c) means for determining weighting coefficients to be applied to each of the broadcasted signals reproduced by each of the loudspeakers of said at least one other communication device, taking account of said pieces of information representative of the distance, (d) an audio interface for: (e) an echo control module modifying a signal Y (f) an interface for transferring the modified signal, with a view to a transmission thereof over the telecommunication network.