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2012 Fiscal Year Final Research Report

Development of Environmental-adaptive Audio System UsingParametric Array Speaker

Research Project

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Project/Area Number 22360094
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionThe University of Electro-Communications

Principal Investigator

KAMAKURA Tomoo  電気通信大学, 大学院・情報理工学研究科, 教授 (50109279)

Co-Investigator(Kenkyū-buntansha) NOMURA Hideyuki  電気通信大学, 大学院・情報理工学研究科, 准教授 (90334763)
Project Period (FY) 2010 – 2012
Keywords音響情報 制御 / 非線形音響
Research Abstract

To reduce the carrier ultrasound of a parametric loudspeaker as much as possible, we first applied the phase-inversion technique to the loudspeaker and obtained good results on the reduction of carrier ultrasound pressures without deteriorating the acoustic characteristics of parametric sounds. We next focused on the realization of a new stereophonic audio system. To realize a new method of stereo reproduction that enables sound localization in a wider area and improves sound field reproduction for higher realistic sensation, we carried out sound localization tests using a two-channel parametric loudspeaker system. The main results show that sound images are localized in an area close to the center and are almost independent of the precedence effect.

  • Research Products

    (35 results)

All 2013 2012 2011 2010

All Journal Article (8 results) (of which Peer Reviewed: 5 results) Presentation (26 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Application of split-step Pade approach to nonlinear field predictions2013

    • Author(s)
      T. Kamakura, H. Nomura, and G. T. Clement
    • Journal Title

      Ultrasonics

      Volume: 53 Pages: 432-438

    • URL

      http://dx.doi.org/10.1016/j.ultras2012.08.008

    • Peer Reviewed
  • [Journal Article] Nonlinear Acoustics-State-of-the-Art and Perspectives2012

    • Author(s)
      T. Kamakura and N. Sugimoto, Editors
    • Journal Title

      ISNA19 Conference Proceedings

      Volume: ISBN 978-0-7354-1082-4

  • [Journal Article] 解説記事:超音波領域から見た多孔質材料の音響特性と音響管測定2012

    • Author(s)
      青木,鎌倉
    • Journal Title

      音響学会誌

      Volume: 68

  • [Journal Article] A review on the parametric acoustic array2012

    • Author(s)
      W-S. Gan, J. Yang, and T. Kamakura
    • Journal Title

      Appl. Acoust.

      Volume: 73 Pages: 1211-1219

    • URL

      http://dx.doi.org/10.1016/j.apacoust2012.04.001

    • Peer Reviewed
  • [Journal Article] Numerical simulation of para- metric sound generation and its app-lication to length-limited sound beam2012

    • Author(s)
      H. Nomura, C. M. Hedberg, and T. Kamakura
    • Journal Title

      Appl.Acoust.

      Volume: 73 Pages: 1231-1238

    • URL

      http://dx.doi.org/10.1016/j.apacoust2012.02.016

    • Peer Reviewed
  • [Journal Article] 解説記事:超音波暴露の調査-パラメトリックスピーカを話題にして-2011

    • Author(s)
      鎌倉, 伊藤, 野村
    • Journal Title

      音響学会誌

      Volume: 67 Pages: 200-203

  • [Journal Article] The feasibility of pulse compression by nonlinear effective bandwidth extension2011

    • Author(s)
      G. T. Clement, H. Nomura, and T. Kamakura
    • Journal Title

      J. Acoust. Soc. Am.

      Volume: 130 Pages: 1810-1819

    • DOI

      DOI:10.1121/1.3625236

    • Peer Reviewed
  • [Journal Article] Parametric sound fields formed by phase-inversion excitation of primary waves2011

    • Author(s)
      T. Kamakura, H. Nomura, M. Akiyama, and C. M. Hedberg
    • Journal Title

      acta acustica withAcustica

      Volume: 97 Pages: 209-218

    • DOI

      Doi:10.3813/AAA.918400

    • Peer Reviewed
  • [Presentation] パラメトリック差音へのパルス圧縮技術適用の実験的検討2013

    • Author(s)
      野村, 安達, 鎌倉, G. Clement
    • Organizer
      超音波研究会
    • Place of Presentation
      同志社大学
    • Year and Date
      20130100
  • [Presentation] Discrimination of winter and summer tires using road surface vibration caused by passing vehicles2012

    • Author(s)
      W. Kongrattanaprasert, H. Nomura, T. Kamakura, K. Ueda, T. Tanizaki, and J. Usami
    • Organizer
      4th Inter- national Science, Social Science, Eng-ineering and Energy Conference
    • Place of Presentation
      Bangkok(Thailand)
    • Year and Date
      20121200
  • [Presentation] チャープ信号によるパラメトリック超音波のパルス圧縮2012

    • Author(s)
      野村, 安達, 鎌倉, G. Clement
    • Organizer
      超音波研究会
    • Place of Presentation
      静岡大学
    • Year and Date
      20121100
  • [Presentation] パラメトリックスピーカの2チャンネル駆動による音像定位2012

    • Author(s)
      眞城, 鎌倉, 野村
    • Organizer
      超音波研究会
    • Place of Presentation
      静岡大学
    • Year and Date
      20121100
  • [Presentation] 音源面音圧のランダム分布が非線形場の形成に与える影響2012

    • Author(s)
      鎌倉, 野村, G. Clement
    • Organizer
      超音波研究会
    • Place of Presentation
      秋田大学
    • Year and Date
      20120900
  • [Presentation] Visualization of parametric sound generation process based on wave number filtering using numerical simulation2012

    • Author(s)
      H. Nomura, T. Kamakura, G. T. Clement, and C. M. Hedberg
    • Organizer
      The 19th ICSV
    • Place of Presentation
      Vilnius (Lithuania)
    • Year and Date
      20120800
  • [Presentation] Estimation of parametric sound field controlled by source amplitudes and phases using numerical simulation2012

    • Author(s)
      H. Nomura, C. Hedberg, and T. Kamakura
    • Organizer
      19th ISNA19
    • Place of Presentation
      Tokyo (Japan)
    • Year and Date
      20120500
  • [Presentation] Effective bandwidth extension by combined harmonics2012

    • Author(s)
      G. Clement, H. Nomura, and T. Kamakura
    • Organizer
      19th ISNA
    • Place of Presentation
      Tokyo (Japan)
    • Year and Date
      20120500
  • [Presentation] Numerical simulation for sonic boom propagation through an inhomogeneous atmosphere with winds2012

    • Author(s)
      M. Yamamoto,A Hashimoto, T. Takahashi, T. Kamakura, and T. Sakai
    • Organizer
      19th ISNA
    • Place of Presentation
      Tokyo(Japan)
    • Year and Date
      20120500
  • [Presentation] Split-step Pade近似の非線形音場解析への応用2012

    • Author(s)
      鎌倉, 野村, G. Clement
    • Organizer
      超音波研究会
    • Place of Presentation
      関西大学
    • Year and Date
      20120100
  • [Presentation] パラメトリックアレイの時間領域シミュレーションと差音ビーム生成の可視化2012

    • Author(s)
      野村, 鎌倉, G. Clement, C. Hedberg
    • Organizer
      超音波研究会
    • Place of Presentation
      関西大学
    • Year and Date
      20120100
  • [Presentation] パラメトリックスピーカにおけるキャリア超音波低減法2011

    • Author(s)
      原, 堀野, 野村, 鎌倉
    • Organizer
      超音波研究会
    • Place of Presentation
      東海大学
    • Year and Date
      20111100
  • [Presentation] 超音波呈示における高周波聴力検査2011

    • Author(s)
      伊藤, 野村, 鎌倉
    • Organizer
      超音波研究会
    • Place of Presentation
      山梨大学
    • Year and Date
      20111000
  • [Presentation] パラメトリッ クスピーカの指向特性検討2011

    • Author(s)
      安武, 吉田, 酒井, 鎌倉
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      島根大学
    • Year and Date
      20110900
  • [Presentation] 多孔性ポリプロピレンフィルムを用いたパラメトリック音源の検討2011

    • Author(s)
      原, 堀野, 安野, 野村, 鎌倉
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      島根大学
    • Year and Date
      20110900
  • [Presentation] パラメトリック差音生成の時間領域シミュレーション2011

    • Author(s)
      野村, C. Hedberg, 鎌倉
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      島根大学
    • Year and Date
      20110900
  • [Presentation] Numerical simulation of length limited parametric sound beam2011

    • Author(s)
      H. Nomura, C. Hedberg, and T. Kamakura
    • Organizer
      ICU2011
    • Place of Presentation
      Gdansk(Poland)
    • Year and Date
      20110700
  • [Presentation] 数値シミュレーションによるパラメトリックアレイの音 場評価 - Self-silenced sound beam への適用-2011

    • Author(s)
      野村, C. Hedberg, 鎌倉
    • Organizer
      超音波研究会
    • Place of Presentation
      電気通信大学
    • Year and Date
      20110400
  • [Presentation] 超指向性音響システムの電気音響特性の評価2011

    • Author(s)
      狩野, 長尾, 鎌倉
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      早稲田大学
    • Year and Date
      20110300
  • [Presentation] 不均質な媒質内を非線形伝搬する超音波ビーム2010

    • Author(s)
      鎌倉, 野村
    • Organizer
      超音波研究会
    • Place of Presentation
      産総研中部センター
    • Year and Date
      20101100
  • [Presentation] キャリア超音波の低減を目的としたパラメトリック音源2010

    • Author(s)
      原, 前川, 野村, 鎌倉
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      関西大学
    • Year and Date
      20100900
  • [Presentation] 生理指標による評価を用いた超音波暴露の基礎研究2010

    • Author(s)
      伊藤, 鎌倉, 野村
    • Organizer
      音響学会講演論文集
    • Place of Presentation
      関西大学
    • Year and Date
      20100900
  • [Presentation] パルス圧縮に対する非線形帯域拡張法2010

    • Author(s)
      G. Clement, 野村, 鎌倉
    • Organizer
      超音波研究会
    • Place of Presentation
      東北大学
    • Year and Date
      20100900
  • [Presentation] Liquid mixing using frequency-modulated ultrasound beams radiated from SAW devices2010

    • Author(s)
      M. Maezawa, H. Nomura, and T. Kamakura
    • Organizer
      20th ICA
    • Place of Presentation
      Sydney (Australia)
    • Year and Date
      20100800
  • [Presentation] Automatic detection of road surface states from tire noise using neural network analysis,''2010

    • Author(s)
      W. Kongrattanaprasert, H. Nomura, T. Kamakura, and K.Ueda
    • Organizer
      20th ICA
    • Place of Presentation
      Sydney(Australia)
    • Year and Date
      20100800
  • [Presentation] キャリア超音波の低減を目的としたパラメトリックスピー カの駆動方法2010

    • Author(s)
      原, 前川, 野村, 鎌倉
    • Place of Presentation
      電気通信大学
    • Year and Date
      20100400
  • [Patent(Industrial Property Rights)] 変調器及び超指向性音響装置2011

    • Inventor(s)
      酒井新一, 吉田俊治, 鎌倉友男
    • Industrial Property Rights Holder
      三菱電機エンジニアリング,電気通信大学
    • Industrial Property Number
      特許、4799303
    • Acquisition Date
      2011-08-12

URL: 

Published: 2014-08-29  

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