Combining sound source tracking algorithms based on microphone array to improve real-time localization

In this paper we present a novel approach to reduce the computation burden of a Field Programmable Gate Array based beamforming localization algorithm. This approach combines GCC (Generalize Cross Correlation) and DSB (Delay and Sum Beamforming). In this work, we reduce the position search spectrum by detecting the direction of arrival of the sound source before the computation of its position, this reduce the DSB computation volume by at least 50% without affecting the localization precision in the speech extended bandwidth.