Presentation 1997/8/8
A Derivation on a Stable Condition of the MEFX LMS Algorithm when Modeling Errors exist in C^^^ Filters.
Tetsuya TAKIMOTO, Yoshinobu KAJIKAWA, Yasuo NOMURA,
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Abstract(in English) The MEFX LMS algorithm is ordinarily used as an update algorithm of the adaptive filter coefficients in the multiple-channel ANC system. However, when we use the algorithm, there is a problem that the condition for stable control is unknown when the modeling errors exist in C^^^ filters. In this paper, we derive theoretical formulae for stable condition and show its effectiveness by expanding the derivation method of the stable condition in the Filtered-x LMS algorithm for the single-channel ANC system into that in the MEFX LMS algorithm for the multiple-channel ANC system. And, we show the theoretical formulae can also apply to the modeling errors of any distributions. Moreover, we study the convergence properties in frequency domain.
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Keyword(in English) Multiple-channel ANC System / MEFX LMS Algorithm / Stable Condition / Modeling Errors
Paper # EA97-31
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Conference Date 1997/8/8(1days)
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Registration To Engineering Acoustics (EA)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Derivation on a Stable Condition of the MEFX LMS Algorithm when Modeling Errors exist in C^^^ Filters.
Sub Title (in English)
Keyword(1) Multiple-channel ANC System
Keyword(2) MEFX LMS Algorithm
Keyword(3) Stable Condition
Keyword(4) Modeling Errors
1st Author's Name Tetsuya TAKIMOTO
1st Author's Affiliation Department of Electronics, Faculty of Engineering, Kansai University()
2nd Author's Name Yoshinobu KAJIKAWA
2nd Author's Affiliation Department of Electronics, Faculty of Engineering, Kansai University
3rd Author's Name Yasuo NOMURA
3rd Author's Affiliation Department of Electronics, Faculty of Engineering, Kansai University
Date 1997/8/8
Paper # EA97-31
Volume (vol) vol.97
Number (no) 222
Page pp.pp.-
#Pages 8
Date of Issue