AUDIO CONFERENCE PLATFORM WITH CENTRALIZED SUMMING

摘要

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.