Attenuation Effects of Discrete Tone Using Adaptive Feedback Active Noise Control

Seiji WATANABE; Kensaku YANAGIMOTO; Katsuya TANIFUJI; Shuichi SAKAMOTO; Masayuki TAKAHASHI; Ryoichi ICHIMIYA

doi:10.1299/jee.2.470

Papers

Attenuation Effects of Discrete Tone Using Adaptive Feedback Active Noise Control

Seiji WATANABE, Kensaku YANAGIMOTO, Katsuya TANIFUJI, Shuichi SAKAMOTO, Masayuki TAKAHASHI, Ryoichi ICHIMIYA

著者情報

キーワード: Noise Control, Adaptive Control, Slit Resonator, Discrete Tone, Tone to Noise Ratio, Prominence Ratio

ジャーナルフリー

2007 年 2 巻 3 号 p. 470-479

DOI https://doi.org/10.1299/jee.2.470

詳細

抄録

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 Mean 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.

責任著者(Corresponding author)

J-STAGEへの登録はこちら（無料）