Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.07b
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- Pages.644-646
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- 1998
Transform domain algorithm for Improving Convergence Speed of Broadband Active Noise Control
광대역 능동소음제어의 수렴속도개선을 위한 변환영역 알고리듬
- Ahn, Doo-Soo (Sung-Kyun-Kwan Univ.) ;
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Kim, Jong-Boo
(Induk Inst. of Tech.) ;
- Lee, Tae-Pyo (Hyundai Motors) ;
- Yim, Kook-Hyun (Taesan Precision)
- Published : 1998.07.20
Abstract
The main drawback of filtered-X LMS(FXLMS) algorithm for the ANC of broadband noises is its low convergence speed when the filtered reference signals are strongly correlated, producing a large eigenvalue spread in correlation matrix. This correlation can be caused either by autocorrelation of the signals of the reference sensors, or by coupling between the error path which introduces intercorrelation in the filtered reference signals. In this paper, we introduce a transform domain FXLMS(TD-FXLMS) algorithm that has a high convergence speed by orthogonal transform's decorrelation properties.
Keywords