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Conference Paper Efficient Sound-source Localization Method based on Direction Estimation using 2D Microphone Array
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Authors
Sang-Woo Seo, Myunggyu Kim, Yejin Kim
Issue Date
2018-12
Citation
International Conference on Information Technology (ICIT) 2018, pp.301-306
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1145/3301551.3301563
Project Code
18KS1200, Development of Unified Platform Technology for Realistic Sports Experience of Youths, Kim Myunggyu
Abstract
In this paper, we propose an efficient sound-source localization method based on a direction estimation technique using a dual delay-and-sum beamforming (DSBF) system and an array of 2D micro electro mechanical system (MEMS) microphones. Assuming the sound source in distance from adjacent microphones, its wave spreads in a planar form called planar wavefront. In our system, the directions and steering angles between the sound source and the microphone array can be estimated based on the planar wavefront model using a delay and sum beamforming (DSBF) method. As shown in the experimental results, the proposed direction-based DSBF system has similar accuracy comparing to a position-based system with lower computational complexity and high-speed performance. The localization errors of the proposed system are less than 3 cm when an impulsive sound source is generated over 1 m away from the microphone array.
KSP Keywords
Adjacent microphones, Delay and Sum Beamforming, Direction estimation, Estimation Technique, High Speed, Impulsive sound, Localization method, Lower computational complexity, Micro-electro-mechanical system(MEMS), Sound source, Source Localization