Attenuation Effects of Discrete Tone Using Adaptive Feedback Active Noise Control
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- WATANABE Seiji
- Control and Information Engineering Systems, Tsuruoka National College of Technology
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- YANAGIMOTO Kensaku
- Control and Information Engineering Systems, Tsuruoka National College of Technology
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- TANIFUJI Katsuya
- 新潟大学工学部
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- SAKAMOTO Shuichi
- 新潟大学工学部
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- TAKAHASHI Masayuki
- オリエンタルモータ (株)
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- ICHIYAMA Ryoichi
- 福山大学工学部
Bibliographic Information
- Other Title
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- 適応フィードバック能動騒音制御による離散周波数音の抑制
- テキオウ フィードバック ノウドウ ソウオン セイギョ ニ ヨル リサン シュウハスウオン ノ ヨクセイ
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Abstract
The attenuation characteristics of a slit resonator that combined the adaptive feedback ANC system at a ventilation aperture of the package for leakage noise is investigated. The discrete tones radiated from an AC axial flow fan are controlled by DSP using Filtered-X Least Meane Square algorithm. The attenuation is found at the range of : 3dB-14dB with circular slit resonator, 2dB-15dB with elliptic slit resonator. Results of measurement show that the proposed system can achieve TNR (Tone to Noise Ratio) and PR (Prominence Ratio) under threshold effectively.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 71 (701), 327-334, 2005
The Japan Society of Mechanical Engineers