Abstract
This research aims to develop a system that will detect sound source localization in a broad area using cross-correlation functions for signals from distributed microphone arrays, which is difficult with conventional methods that use microphone arrays. For the localization of sound sources, four microphones were distributed in an anechoic room. Based on the result, the system was able to estimate the sound source position within a plus or minus 20 mm of accuracy. To verify the accuracy of the system, a reflective surface was set up in an anechoic room to confirm the effect of reflected and diffracted sound. No significant increase in error was observed when the reflective surface was behind the microphone as viewed from the sound source. However, the estimation error increased when diffracted sound was present.
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