Multiple Speaker Localization in a Smart Room

摘要

in recent years, there has been growing an interest in intelligent system. Human-machine interaction and the automatic analysis of meeting in smart room is an emerging research field. One of the most important tasks in a smart room is localization of multi-speaker that permits a wide spectrum of application. In this paper, by using the Combined of hyperbolae produced by time delay estimation (TDE) between several microphones pair and the head orientation information, a new acoustic multi-speaker localization function has been proposed that we call it OPROD-PHAT function. We implement a grid-based, multiple speaker localization method. On the multiple moving speaker location estimation, the new approach has been proposed, that to find number of active source in each time frame, the power of cross correlation function has been used. After find the loudest source present by maximizing the energy of a steered beamformer, in order to localize other source, the process is repeated by removing the contribution of the first source. The result of simulation show superior performance of proposed system.