Abstract
The purpose of this study is to develop a system that can detect sound source localization in a plane using a cross-correlation function between acoustic signals recorded by microphones distributed in a plane. An anechoic chamber experiment showed that the system was capable of estimating the location of stationary sound sources with plus or minus 20 mm accuracy. As well as estimating the locations of moving sources of sound, the system was also able to locate them with an error of approximately 10 mm. A Raspberry Pi equipped with an A/D converter, microphone, and GPS module was then used to develop an acoustic measurement device. This was used to identify sound source location by using time synchronization with GPS signals in an outdoor space.
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