Binaural Souond Localization based on Sparse Coding and SOM

Title
Binaural Souond Localization based on Sparse Coding and SOM
Authors
김홍식최종석
Issue Date
2009-10
Publisher
2009 IEEE/RSJ International Conference on Intelligent Robots and Systems
Abstract
Many kinds of sound source localization systems have been developed for detecting a direction of sound source. They are commonly using time delay of arrival (TDOA) or interaural time difference (ITD) algorithm for sound source localization where, especially, the ITD is the difference in arrival time of a sound between two ears. It is largely changed depending on frequency components of sound even though the sound source is located in the same place. In this paper we propose a binaural sound localization system using sparse coding based ITD (S-ITD) and self-organizing map (SOM). The sparse coding is used for decomposing given sounds into three components: time, frequency and magnitude. Moreover we estimate the azimuth angle through the SOM. This localization system is installed in our robot that has two ears, head and body. We use PeopleBot as a body of the robot.
URI
http://pubs.kist.re.kr/handle/201004/36087
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KIST Publication > Conference Paper
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