1. An electronic apparatus, comprising: a receiver configured to receive frames of data packets, the frames of data packets corresponding to voice data from a plurality of speakers; and a detector configured to, for each of the frames, generate a first decision indicating whether a given frame comprises voice data of a specific speaker among the plurality of speakers based on spectral properties indicating power and frequency of data packets in the given frame, generate a second decision indicating whether an instantaneous power level of the given frame exceeds a power threshold, generate a third decision indicating whether the given frame comprises the voice data of the specific speaker based on the first decision and the second decision, and output the third decision.