Robust impulsive sound source localization by means of an energy detector for temporal alignment and pre-classification

In this paper, we present a novel approach for detection and localization of both impulsive and non-impulsive sound sources. At first, theoretical basics of the used algorithms are presented. Subsequently, we describe a standard SRP-PHAT based localization method and discuss occurring complications, especially for impulsive sound sources. Therefore, a modified approach is presented as a solution. It distinguishes between impulsive and non impulsive sound sources, and additionally aligns the detection window to the event. The pre-classification and alignment are done with the help of an energy detector.