Hybrid Algorithm for Robust, Real-Time Source Localization in Reverberant Environments

摘要

The location of an acoustical source can be found robustly using the Steered Response Pattern - Phase Transform (SRP-PHAT) algorithm. However SRP- PHAT can be computationally expensive, requiring a search of a large number of candidate locations. The required spacing between these locations is dependent on sampling rate, microphone array geometry, and source location. In this work, a novel method will be presented that calculates a smaller number of test points using an efficient closed-form localization algorithm. This method significantly reduces the number of calculations, while still remaining robust in acoustical environments.