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Accurate delay extraction for indoor pulse sound source location

This paper provides a method of accurate time delay extraction for indoor pulse sound location. For short pulse signal, we use endpoint detection method and smoothed coherence transform weighted generalized cross correlation (SCOT-GCC) algorithm to estimate time difference of arrivals (TDOAs) between two microphones, and extract TDOAs of SCOT-GCC which is much closer to endpoint detection results as the final results. Experimental results show that, this method can extract the accurate TDOAs, and overcome the effects of noise and reverberation effectively; again the performance of TDE can be improved.