[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5573/JSTS.2014.14.2.175

Real-time Sound Localization Using Generalized Cross Correlation Based on 0.13 ㎛ CMOS Process

Jin, Jungdong (Dep. ECE., Sungkyunkwan University)
Jin, Seunghun (Dep. ECE., Sungkyunkwan University)
Lee, SangJun (Dep. ECE., Sungkyunkwan University)
Kim, Hyung Soon (Dep. EE., Pusan University)
Choi, Jong Suk (Adv. Robotics Research Center, KIST)
Kim, Munsang (Adv. Robotics Research Center, KIST)
Jeon, Jae Wook (Dep. ECE., Sungkyunkwan University)

Publication Information

JSTS:Journal of Semiconductor Technology and Science / v.14, no.2, 2014 , pp. 175-183 More about this Journal

Abstract

In this paper, we present the design and implementation of real-time sound localization based on $0.13{\mu}m$ CMOS process. Time delay of arrival (TDOA) estimation was used to obtain the direction of the sound signal. The sound localization chip consists of four modules: data buffering, short-term energy calculation, cross correlation, and azimuth calculation. Our chip achieved real-time processing speed with full range ( $360^{\circ}$ ) using three microphones. Additionally, we developed a dedicated sound localization circuit (DSLC) system for measuring the accuracy of the sound localization chip. The DSLC system revealed that our chip gave reasonably accurate results in an experiment that was carried out in a noisy and reverberant environment. In addition, the performance of our chip was compared with those of other chip designs.

Keywords

Sound signal processing; time delay of arrival; generalized cross correlation; application specific integrated circuit; microphone arrays;

Citations & Related Records

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