Patent ID: 8619963

Claim:
A conference call system, comprising: a memory for storing a maximum number of dominant speakers and a current number of dominant speakers; an input interface for receiving during a conference call a plurality of input speaker streams, each input speaker stream representing an audio signal from a respective audio source; a selection unit coupled to the input interface, for selecting, according to a first selection criterion, dominant speaker streams from said plurality of input speaker streams, and for storing the number of selected dominant speaker streams as said current number of dominant speakers, said number of selected dominant speaker streams being limited by the maximum number of dominant speakers; a mixer coupled to said selection unit, for mixing said selected dominant streams into an output stream; an output interface for outputting said output stream; and a selection control unit coupled to said selection unit and said input interface, for changing, according to a dominant speaker setting criterion during said conference call, said maximum number of dominant speakers based on dynamics of said conference call.