Proceedings of the KSPS conference (대한음성학회:학술대회논문집)
- 2005.11a
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- Pages.121-124
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- 2005
Two Simultaneous Speakers Localization using harmonic structure
하모닉 구조를 이용한 두 명의 동시 발화 화자의 위치 추정
- Kim, Hyun-Kyung (Department of Computer Engineering KyungHee Univ.) ;
- Lim, Sung-Kil (Department of Computer Engineering KyungHee Univ.) ;
- Lee, Hyon-Soo (Department of Computer Engineering KyungHee Univ.)
- Published : 2005.11.17
Abstract
In this paper, we propose a sound localization algorithm for two simultaneous speakers. Because speech is wide-band signal, there are many frequency sub-bands in that two speech sounds are mixed. However, in some sub-bands, one speech sound is more dominant than other sounds. In such sub-bands, dominant speech sounds are little interfered by other speech or noise. In speech sounds, overtones of fundamental frequency have large amplitude, and that are called 'Harmonic structure of speech'. Sub-bands inharmonic structure are more likely dominant. Therefore, the proposed localization algorithm is based on harmonic structure of each speakers. At first, sub-bands that belong to harmonic structure of each speech signal are selected. And then, two speakers are localized using selected sub-bands. The result of simulation shows that localization using selected sub-bands are more efficient and precise than localization methods using all sub-bands.
Keywords