フィルタードXLMSアルゴリズムを用いた能動騒音制御システムの消音性能にモデリングエラーが及ぼす影響
書誌事項
- タイトル別名
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- Influence of modeling error on noise reduction performance of active noise control systems using filtered-X LMS algorithm
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説明
This paper investigates the influence of modeling error that is the difference of the characteristic between the secondary path and its model on the behavior of the filtered-X LMS adaptive filter. The equations that describe the behavior of the adaptive filter are presented at first, and the influence of modeling error is considered based on the equations. Both the stability and the noise reduction performance are discussed, and particularly, we discussed in detail the noise reduction performance under modeling error condition that has rarely been considered. In addition, the conditions required for maintaining the noise reduction performance is also presented. The results of the theoretical consideration are confirmed by computer simulation in which the impulse responses measured in a vehicle cabin are used. Through the investigation, it is proved that the algorithm may be stable except for the substantial modeling error case, and the noise reduction performance will be inferior to that under ideal condition in general. These results suggest that we should use the on-line identification system when the secondary path characteristic is time variant.
収録刊行物
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- Journal of the Acoustical Society of Japan ?
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Journal of the Acoustical Society of Japan ? 17 (4), 195-202,
Japan Acoustical Society of Japan
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キーワード
詳細情報 詳細情報について
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- CRID
- 1542543045157267200
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- NII論文ID
- 110003106161
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- NII書誌ID
- AA00256597
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- 本文言語コード
- en
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- データソース種別
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- NDLデジコレ（旧NII-ELS）
- CiNii Articles
