Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)
- spring
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- Pages.41-44
- /
- 2002
Orthogonal Least Square Approach to Nonstationary Source Separation
- Choi Heeyoul (Dept. Computer Science and Engineering, POSTECH) ;
- Choi Seungjin (Dept. Computer Science and Engineering, POSTECH)
- Published : 2002.07.01
Abstract
Blind source separation (BSS) is a fundamental problem that is encountered in many practical applications. In most existing methods, stationary sources are considered higher-order statistics is necessary either explicitly or implicitly. But, many natural signals are nonstationary, and it is possible to perform BSS using only second-order statistics. Our method is based on only second order statistics. The algorithms are developed using the gradient descent method in orthogonality constraint and their performance is confirmed by numerical experiments.
Keywords