Sound localization system for teleconferencing using...

H - Electricity – 04 – N

Patent

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H04N 7/15 (2006.01) H04R 1/32 (2006.01) H04R 1/40 (2006.01)

Patent

CA 2153171

A teleconferencing system (100) is disclosed having a video camera for generating a video signal representative of a video image of a first station B. A microphone array (150, 160) is also provided in the first station for receiving a sound from one or more fixed non-overlapping volume zones (151-159) into which the first station is divided. The microphone array is also provided for generating a monochannel audio signal (170) representative of the received sound and a direction signal indicating, based on the sound received from each zone, from which of the volume zones the sound originated. The teleconferencing system also includes a display device (120A) at a second station A for displaying a video image of the first station. A loudspeaker control device (140) is also provided at the second station for selecting a virtual location (121) on the displayed video image depending on the direction signal, and for generating stereo sound from the monochannel audio signal which stereo sound emanates from the virtual location on the displayed video image.

Un système de téléconférence (100) comprend une caméra vidéo générant un signal vidéo représentatif d'une image vidéo d'une première station B. Une rangée de microphones (150, 160) est également installée dans la première station pour permettre de récevoir un son d'une ou de plusieurs zones de volume sans chevauchement, fixes (151-159) afin de générer un signal sonore à un canal (170) représentatif du son reçu et un signal directionnel indiquant, à partir du son reçu de chaque zone, de quelle zone de volume provient le son. Le système de téléconférence comprend également un dispositif d'affichage (120A) au niveau d'une seconde station A servant à afficher une image vidéo de la première station. Un dispositif de commande de haut-parleur (140) est également ménagé au niveau d'une seconde station afin de sélectionner un emplacement virtuel (121) sur l'image vidéo affichée en fonction du signal directionnel, et de générer un son stéréo provenant du signal sonore à un canal, ce son stéréo émanant de l'emplacement virtuel de l'image vidéo affichée.

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