Active noise cancellation with a new variable tap length and step size FXLMS algorithm

Dah Chung Chang, Fei Tao Chu

研究成果: 書貢獻/報告類型會議論文篇章同行評審

4 引文 斯高帕斯(Scopus)

摘要

The filtered-X least mean square (FxLMS) algorithm is widely used for active noise cancellation (ANC). Some variants of FxLMS algorithms have been studied to reduce computational complexity or to improve convergence rate. In general applications, a long tap length is usually required for the conventional FxLMS method which convergence rate is very slow though its structure is possibly very easy to implement. In this paper, a new ANC system is proposed with a variable tap length and step size FxLMS algorithm. Taking into account the effect of the lowpass filter in the secondary path of an ANC system, the impulse response of the control filter is modeled with a two-sided exponential decay envelope to develop our algorithm. Simulation results show that the proposed algorithm does provide a significant performance improvement on convergence rate and noise reduction ratio compared to the fixed tap FxLMS and previously proposed variable step size FxLMS algorithms.

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主出版物標題2013 IEEE International Conference on Multimedia and Expo, ICME 2013
DOIs
出版狀態已出版 - 2013
事件2013 IEEE International Conference on Multimedia and Expo, ICME 2013 - San Jose, CA, United States
持續時間: 15 7月 201319 7月 2013

出版系列

名字Proceedings - IEEE International Conference on Multimedia and Expo
ISSN(列印)1945-7871
ISSN(電子)1945-788X

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???event.eventtypes.event.conference???2013 IEEE International Conference on Multimedia and Expo, ICME 2013
國家/地區United States
城市San Jose, CA
期間15/07/1319/07/13

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