Abstract
This paper suggests an effective estimation method of a sound source direction using an array of four microphones. We have used the array incorporated in the Microsoft Kinect device to acquire the binaural signals in real-time. The configuration of the microphone array has been inspired from how human auditory system processes sound waves. The microphone array is composed of four microphones that have been used in two pairs (P1 and P2) at the same diameter to mount the experimental setup. The distance of the array size was defined beforehand. The estimated direction provided by the angle of arrival (AOA) has been investigated. The sound source direction is estimated using the interaural time difference (ITD) measurement calculated by the generalized cross-correlation with phase transform (GCC-PHAT) function. To test the effectiveness of the estimation method, MATLAB trials are carried out under three different sound source distances. Experimental results show that the superiority of the sound source estimation can achieve a minimum accuracy of 92%.
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Douaer, B. (2022). Improved DOA Estimation Method for Sound Source Direction Based on Binaural Signals Using an Array of Two Pairs of Microphones. In: Hatti, M. (eds) Artificial Intelligence and Heuristics for Smart Energy Efficiency in Smart Cities. IC-AIRES 2021. Lecture Notes in Networks and Systems, vol 361. Springer, Cham. https://doi.org/10.1007/978-3-030-92038-8_53
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