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2001 Fiscal Year Final Research Report Summary

A Basic Study on a Micro Sensor/Actuator with Equivalent Structure of Human Basilar Membrane

Research Project

Project/Area Number 10355018
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Measurement engineering
Research InstitutionThe University of Tokyo

Principal Investigator

ANDO Shigeru  Graduate School of Information Science and Technology, The University of Tokyo, Professor, 大学院・情報理工学系研究科, 教授 (70134468)

Co-Investigator(Kenkyū-buntansha) ONO Nobutaka  Graduate School of Information Science and Technology, The University of Tokyo, Research Associate, 大学院・情報理工学系研究科, 助手 (80334259)
KIMACHI Akira  Osaka Electro-Communication University, Faculty of Information Science and Art, Lecturer, 総合情報学部, 講師 (30312987)
SHINODA Hiroyuki  Graduate School of Information Science and Technology, The University of Tokyo, Associate Professor, 大学院・情報理工学系研究科, 助教授 (40226147)
HARADA Muneo  Sumitomo Metal Industries, Ltd., Advanced Technology Research Laboratories, Assistant Chief Research, デバイス技術室, 副主任研究員
Project Period (FY) 1998 – 2001
Keywordsauditory sensor / bio-mimicry / sound source localization / fishbone structure / micro-machining / AM-FM detection / time frequency analysis / hearing aid
Research Abstract

In this project, we aim to develop a micro sensor/actuator with fishbone structure, which is a equivalent system of the human basilar membrane. Our specific targets are a) intelligence microphone for speech recognition, b) hearing aids with adaptive frequency charateristics.
The summary of the results of this project is as follows:
1. Derivation of an optimum fishbone structure as an intelligence microphone
As an optimal design of fishbone, we derived "perfect log-linear structure" , in which
1) resistive elements of resonators are constant,
2) inductive, capacitive elements are arrayd on a log-linear.
2. Proposition of a new feature extraction for acoustic signals
We constructed a theory to extract AM/FM/pitch componets from output signals of fishbone.
3. Implementation of fishbone by Si micro-machining
By a process in Sumitomo Metal Industries, we designed and fabricated fishbone structure and confirmed its characteristics by experimets.
4. Applications of fishbone sensors
With using fishbone sensors, we realized
1) an acoustic sensor with controllable frequency characteristics for micro hearing aids,
2) a sound source localization sensor with bio-mimicry structure.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] M.Harada, S.Ando et al.: "Micro Mechanical Acoustic Sensor toward Artificial Basilar Membrane Modeling"Trans. Inst. Electrical Engineers of Japan. 119-E・3. 125-139 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小野, 安部, 安藤: "対数微分分解に基づく音響センシング(I):サブバンドAM-FM変動の基底波形分解に基づく特徴抽出法"電気学会論文誌. 119-E・10. 498-505 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西, 安藤: "定Q櫛形フィルタとその時間/周波数特性-ピッチ変動誤差に頑健な調波信号推定のためのフィルタ特性-"電子情報通信学会論文誌. J83-A・2. 152-160 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 安部, 安藤: "共有FM-AMの時間周波数統合に基づく聴覚情景解析(1)-Lagrange微分特徴量とその周波数軸統合-"電子情報通信学会論文誌. J83-D-II・2. 458-467 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 安部, 安藤: "共有FM-AMの時間周波数統合に基づく聴覚情景解析(II)-最適な時間軸統合とストリーム音の再合成-"電子情報通信学会論文誌. J83-D-II・2. 468-477 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Ono, Y.Zaitsu, T.Nomiyama A.Kimachi, S.Ando: "Biomimicry sound source localization with "Fishbone""Trans. IEEJ. 121-E・6. 313-319 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Harada, S. Ando, et. al.: "Micro Mechanical Acoustic Sensor toward Artificial Basilar Membrane Modeling"Trans. IEE Japan. vol. 119-E, no. 3. 125-139 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Ono, M. Abe, S. Ando: "Acoustic Sensing Based on Logarithmic Differential Decomposition (I): Feature Extraction Based on Basis Waveforms Decomposition"Trans. IEE Japan. vol. 119-E, no. 10. 498-505 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Nishi, S. Ando: "Uniform-Q Comb Filter and its Time/Frequency Characteristics - Filter Architecture for Harmonics Estimation with Robustness to Pitch Fluctuation Error -"Trans. IEE Japan. vol. J83-A, no. 2. 152-160 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Abe, S. Ando: "Auditory Scene Analysis Based on Time-Frequency Integration Shared FM and AM (I): Lagrange Differential Features and Frequency-Axis Integration."Trans. IEE Japan. vol. J83-D-II, no. 2. 458-467 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Abe, S. Ando: "Auditory Scene Analysis Based oh Time-Frequency Integration Shared FM and AM (II): Optimum Time-Domain Integration and Stream Sound Reconstruction"Trans. IEE Japan. vol. J83-D-II, no. 2. 468-477 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Ono. Y. Zaitsu, T. Nomiyama A. Kimachi and S. Ando: "Biomimicry sound source localization with "Fishbone""Trans. IEE Japan. vol. 121-E, no. 6. 313-319 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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