Audio conference platform with centralized summing

H - Electricity – 04 – M

Patent

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Details

H04M 3/56 (2006.01) H04M 3/42 (2006.01) H04M 3/436 (2006.01) H04M 7/00 (2006.01) H04M 7/12 (2006.01) H04Q 1/45 (2006.01)

Patent

CA 2367562

An audio conferencing platform (26) includes data bus (e.g., a time division multiplex (TDM) bus) (42), a controller (48), and an interface circuit (38-40) that receives audio signals from a plurality of conference participants and provides digitized audio signals in assigned time slots over the TDM bus. The audio conferencing platform also includes a plurality of digital signal processors (DSPs) (60-65) adapted to communicate on the TDM bus (42) with the interface circuit (38-45). At least one of the DSPs sums a plurality of the digitized audio signals associated with conference participants who are speaking, to provide a summed conference signal. This DSP provides the summed conference signal to at least one of the other plurality of DSPs, which removes the digitized audio signal associated with a speaker whose voice is included in the summed conference signal, to provide a customized conference audio signal to each of the speakers.

La présente invention concerne une plate-forme d'audioconférence (26) comprenant un bus de données (c'est à dire, un bus de multiplexage par division dans le temps (TDM)) (42), une unité de commande (48), et un circuit d'interface (38-40) recevant des signaux audio provenant de plusieurs participants de conférence et qui envoie des signaux audio numérisés dans des intervalles de temps attribués sur le bus TDM. La plate-forme d'audioconférence comprend aussi plusieurs processeurs de signal numérique (DSP) (60-65) conçus afin de communiquer sur le bus TDM (42) avec le circuit d'interface (38-45). Au moins un des DSP somme plusieurs des signaux audio numérisés associés aux participants de conférence qui parlent, afin de d'obtenir un signal de conférence sommé. Ce DSP permet d'envoyer le signal de conférence sommé à au moins un des autres DSP, qui élimine le signal audio numérisé associé avec un orateur, dont la voix est inclue dans le signal de conférence sommé, afin de restituer un signal audio de conférence personnalisé à chacun des orateurs.

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