Binaural Souond Localization based on Sparse Coding and SOM
- Binaural Souond Localization based on Sparse Coding and SOM
- 김홍식; 최종석
- Issue Date
- 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems
- 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.
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