Adaptive coupling equalization in beamforming-based...

H - Electricity – 04 – M

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H04M 9/08 (2006.01) H04M 1/60 (2006.01)

Patent

CA 2559668

A method and system for rapid adaptive coupling equalization in beamforming-based communication systems, particularly sector-based beamforming systems, provides smooth transitions for AEC when the look direction of the communication system changes and when the acoustic environment varies with time. The coefficients of inactive beamformers are modified in real-time, using adaptive beamforming techniques based on the real- time loudspeaker-coupling signal, in order to force the outputs of inactive beamformers to have the same response to the loudspeaker coupling signal as the active beamformer does.

Il s'agit d'une méthode et d'un système qui permettent d'égaliser rapidement le couplage adaptatif des systèmes de communication à base de formation de faisceaux, en particulier dans les systèmes de formation de faisceaux par secteurs. Il est ainsi possible d'obtenir des transitions régulières pour l'égalisation de couplage adaptatif (AEC), lorsque l'orientation du système de communication change et lorsque le milieu acoustique varie avec le temps. Les coefficients des formeurs de faisceaux inactifs sont modifiés en temps réel, au moyen de techniques de formation de faisceaux adaptatives basées sur le signal d'accouplement des haut-parleurs en temps réel, afin que les sorties des formeurs de faisceaux inactifs présentent la même réponse au signal d'accouplement des haut-parleurs que le formeur de faisceaux actif.

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