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Identification of sound source position or direction based on the statistical independecy in an actual sound environment

Research Project

Project/Area Number 13650472
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionKinki University

Principal Investigator

NAKASAKO Noboru  Kinki University, Dept. Biology-Oriented Sc. and Tech., Professor, 生物理工学部, 教授 (90188920)

Co-Investigator(Kenkyū-buntansha) OGURA Hisanao  Kinki University, Dept. Biology-Oriented Sc. and Tech., Professor, 生物理工学部, 教授 (50025954)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
KeywordsMUSIC Method / Kalman filter / Blind source separation / Point source / Phase difereace / Sound attenuation in distance / Estimation of source position or direction / Inverse filter / 複素ICA / 距離減衰 / 音源方位推定 / 音源位置推定 / 信号回復
Research Abstract

Sound source localization problem has been important in various actual fields of acoustics and many approaches have been developed e.g., MUSIC, etc. Most of them utilize only the lower order statistics of observations such as a covariance matrix and the orthogonality (or uncorrelation) between the objective signal and noise. Recently , Independent Component Analysis (ICA) becomes popular to solve a blind signal separation problem where independent sources are mixed and then measured by multiple sensors. The ICA of complex signals has been also proposed for a case when observations have time differences between source signals or are affected by system (room etc.).
In this research, some trials of estimating the sound source positions or directions are proposed from various viewpoints. In particular, most of them are based on the statistical independency between source signals or between the source signal and an additional noise. The results we obtained in 2001 and 2002 are listed below.
[ … More 2001 year]: As the first step of research, the correlation method is introduced to calculate the delay time between observations at each microphone and then to estimate the sound direction. In the second approach, MUSIC method and Kalman filter are employed, respectively, to estimate the direction of source and to detect the amplitude information for sound source localization.
The third method is a trial of estimating the time delays or the distances between receivers and sound sources based on the complex ICA, especially for the mixed observations with time delays. Further, we can easily construct an inverse filter to separate the (over-all) real mixed signals using the parameters estimated by ICA, while the usual complex ICA required synthesizing all frequency components. Finally, through fundamental simulation, we demonstrate the high-quality blind separation as well as the validity for the estimation of the source parameters.
[2002 year]: Following to the fundamental consideration on the sound source localization problem in 2001, the extensive simulation makes it clear that the proposed method also enables us to find the directions of arrival. These results have been presented in domestic or international conferences. Less

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] 中迫 昇, 永座 強: "MUSIC法による音源位置の推定"平成13年度電気・情報関連学会中国支部連合大会講演論文集. 72-72 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 永座 強, 中迫 昇: "MUSIC法とカルマンフィルタによる音源位置の推定"第10回計測自動制御学会中国支部学術講演会講演論文集. 126-127 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小倉 久直, 中迫 昇, 佐久間 有子: "時間差混合音声のブラインド分離 -音源推定と逆フィルタによる分離・再生-"文部科学省統計数理研究所共同研究レポート. 150. 1-16 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小倉 久直, 中迫 昇, 佐久間 有子: "複素ICAに基づく時間差混合信号からの音源推定と逆フィルタによる分離・再生"2002年度日本音響学会秋季研究発表会講演論文集. 1. 553-554 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中迫 昇, 小倉 久直, 佐久間 有子: "ブラインド分離による時間差混合信号からの複数音源の推定と逆フィルタを用いた分離・再生"平成14年度電気関係学会関西支部連合大会講演論文集. G349-G349 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Ogura, N.Nakasako, Y.Sakuma: "Blind separation of mixed speeches with time delays --Estimation of source parameters and separation by an inverse filter"Proceedings of 2002 International Symposium on Intelligent Signal Processing and Communication System. 123-127 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中迫 昇, 小倉 久直, 佐久間 有子: "複素ICAに基づく時間差混合信号からの音源推定と逆フィルタによる分離・再生"電子情報通信学会応用音響研究会技術報告. EA2002. 25-30 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中迫 昇, 小倉 久直: "複素ICAのパラメータに基づく音源位置同定と信号回復 --時間差混合信号のブラインド分離と逆フィルタ"2003年度日本音響学会春季研究発表会講演論文集. 1. 679-680 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小倉 久直, 中迫 昇, 佐久間 有子: "時間差混合信号からの複素ブラインド分離による音源同定と分離・再生のための逆フィルタ"2003年度電子情報通信学会全国大会講演論文集. S13-S14 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Noboru Nakasako and Tsuyoshi Eiza: "Estimation of sound souce position by MUSIC method"Proc. United. Conf. of Societies of Chugoku-branch Related to Electricity and Information Science. 72 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tsuyoshi Eiza and Noboru Nakasako: "Estimation of sound source position by MUSIC method and Kalman filter"Proc. Annual Conf. of SICE Chugoku-branch. 126-127 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura, Noboru Nakasako and Yuko Sakuma: "Blind separation of mixed speeches with time Differences - Estimation of sources and separation and reproduction of speeches by means of an inverse filter"Report on Joint Research of The Institute of Statistical Mathematics. Vol.150. 1-16 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura, Noboru Nakasako and Yuko Sakuma: "Sound source localization for time-shifted mixtures based on complex ICA and separation/reproduction by inverse filter"Proc. the 2002 Autumn Meeting of the Acoust. Soc. Jpn.. Vol.1. 553-554 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Noboru Nakasako, Hisanao Ogura and Yuko Sakuma: "Sound source identification for multiple-sources from time-shifted mixtures based on blind separation and separation/reproduction by inverse filter"Proc. United Conf. of Societies of Kansai-branch Related to Electricity. G349 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura, Noboru Nakasako and Yuko Sakuma: "Blind separation of mixed speeches with time delays - Estimation of source parameters and separation by an inverse filter"Proc. of 2002 International Symposium of Intelligent Signal Processing and Communication Systems. 123-127 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura, Noboru Nakasako and Yuko Sakuma: "Sound source localization and separation using complex ICA from mixed observations with time differences and reproduction of signals by means of an inverse filter"Technical Report of IEICE. Vol.EA2002. 25-30 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura and Noboru Nakasako: "Sound source localization based on the estimated parameters by complex ICA and restoration of signals - Blind separation for time-shifted mixtures and inverse filtering"Proc. the 2003 Spring Meeting of the Acoust. Soc. Jpn.. Vol.1. 679-680 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hisanao Ogura, Noboru Nakasako and Yuko Sakuma: "Sound source localization from time-shifted Mixtures by complex blind separation and inverse filter design for separation/reproduction - Simulation on speech data"Proc. of the 2003 IEICE General Conf.. S13-S14 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小倉 久直, 中迫 昇, 佐久間 有子: "複素ICAに基づく時間差混合信号からの音源推定と逆フィルタによる分離・再生"2002年度日本音響学会秋季研究発表会講演論文集. 1. 553-554 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中迫 昇, 小倉 久直, 佐久間 有子: "ブラインド分離による時間差混合信号からの複数音源の推定と逆フィルタを用いた分離・再生"平成14年度電気関係学会関西支部連合大会講演論文集. G-349-G-349 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Ogura, N.Nakasako, Y.Sakuma: "Blind separation of mixed speeches with time delays -Estimation of source parameters and separation by an inverse filter"Proceedings of 2002 International Symposium on Intelligent Signal Processing and Communication Systems. 123-127 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中迫 昇, 小倉 久直, 佐久間 有子: "複素ICAに基づく時間差混合信号からの音源推定と逆フィルタによる分離・再生"電子情報通信学会応用音響研究会技術報告. EA2002. 25-30 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中迫 昇, 小倉 久直: "複素ICAの推定パラメータに基づく音源位置推定と信号回復 -時間差混合信号のブラインド分離と逆フィルター -"2003年度日本音響学会春季研究発表会講演論文集. 1(発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中迫 昇, 小倉 久直, 佐久間 有子: "時間差混合信号からの複素ブラインド分による音源同定と分離・再生のための逆フィルタ"2003年度電子情報通信学会全国大会講演論文集. (発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中迫 昇, 永座 強: "MUSIC法による音源位置の推定"平成13年度電気・情報関連学会中国支部連合大会講演論文集. 72-72 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 永座 強, 中迫 昇: "MUSIC法とカルマンフィルタによる音源位置の推定"第10回計測自動制御学会中国支部学術講演会講演論文集. 126-127 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 小倉 久直, 中迫 昇, 佐久間 有子: "時間差混合音声のブラインド分離-音源推定と逆フィルタによる分離・再生-"文部科学省統計数理研究所共同研究レポート. 150. 1-16 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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