ピッチ変動と振幅変動に頑健性を有する調波信号抽出フィルタ A Harmonics Extraction Filter with Robustness to Pitch and Amplitude Fluctuation

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An optimal harmonics extraction filter with pitch fluctuation from the noise-corrupted observation is proposed. It is derived as a solution to the Kalman-Bucy filter in which the pitch fluctuation is treated as a state-dependent noise. The analytical solution provides the frequency characteristic which consists of constant-Q pass-bands just located on each harmonic frequency. This remarkable structure is well suited to the increasing harmonic fluctuation in direct proportion to the harmonic frequency. Simulation results show that this filter has a robustness to the pitch estimation error and fluctuation. Examples of the filter design are presented, and the performance of sound extraction is examined by comparison with conventional filters.

収録刊行物

  • 電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society  

    電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society 119(4), 215-220, 1999-04 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10004833820
  • NII書誌ID(NCID)
    AN1052634X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13418939
  • NDL 記事登録ID
    4705160
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-B380
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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