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2001 Fiscal Year Final Research Report Summary

Development of Multi-site Voice Control System for Space Collaboration System

Research Project

Project/Area Number 11680242
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Educational technology
Research InstitutionNational Institute Of Multimedia Education

Principal Investigator

ASAI Kikuo  National Institute Of Multimedia Education, Research & Development, Associate Professor, 研究開発部, 助教授 (90290874)

Co-Investigator(Kenkyū-buntansha) OSAWA Noritaka  National Institute Of Multimedia Education, Research & Development, Associate Professor, 研究開発部, 助教授 (30251721)
SUGIMOTO Yuji  National Institute Of Multimedia Education, Research & Development, Professor, 研究開発部, 教授 (90311167)
KONDO Kimio  National Institute Of Multimedia Education, Research & Development, Professor, 研究開発部, 教授 (40249925)
YUKI Kiyohiro  National Institute Of Multimedia Education, Research & Development, Professor, 研究開発部, 教授 (60300696)
MUTO Kenji  Tokyo Metropolitan College of Aeronautical Engineering, Associate Professor, 助教授 (30259832)
Project Period (FY) 1999 – 2001
KeywordsInter-university Satellite Network / Voice Arrangement / Automatic Gain Control / Acoustic Environment Measurement / Asymmetric-closed Satellite Network
Research Abstract

The research purpose is to develop a voice control system which automatically arranges a voice level, so that one can make smooth discussion in the use of the interuniversity satellite network (SCS). Although most of the audio-visual equipments are automatically controlled with easy operation in the SCS, users had to make the voice level arrangement because of difficulty of the automation. To arrange the voice level of each station keeping balance of the whole system, one solution is considered sharing information on the voice level between stations. Then, we developed a data sharing system in the satellite network, quid studied on the performance implementing it into VSAT stations of the SCS.
The developed data sharing system allows us to make a multicast file transfer. To exploit the SCS features, we focused on material transmission during a session, and designed the system with smooth connectivity to the link control system. Signal multiplex function of a CODEC makes it possible to select a link-speed bandwidth. We also investigated on the asymmetric-closed satellite network in order to avoid complexity of dynamic path setting.
Recognition of difference between voice and noise is necessary for automatic voice level control that not only suppresses excessive inputs, but also gains small voice to proper level. The measurement of the acoustic environment used in the SCS indicated that threshold setting of the sound level is not enough for voice level arrangement. We studied on the voice level control system that has input-output property with frequency dependency, focusing on frequency property difference between voice and noise.

  • Research Products

    (13 results)

All 2001 2000 1999

All Journal Article (13 results)

  • [Journal Article] 大学間衛星ネットワークにおけるデータ共有2001

    • Author(s)
      浅井紀久夫, 大澤範高, 近藤喜美夫, 結城皖曠, 吉田勝昭
    • Journal Title

      情報処理学会論文誌 41

      Pages: 2782-2793

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] FDMAとTDMAを組み合わせた非対称衛星ネットワークに関する検討2001

    • Author(s)
      浅井紀久夫, 大澤範高, 近藤喜美夫, 石原一雄
    • Journal Title

      平成13年電気学会電子・情報・システム部門大会

      Pages: II-505

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Data-Sharing on Inter-University Satellite Network2001

    • Author(s)
      K.Asai, N.Osawa, K.Kondo, K.Yuki, K.Yoshida
    • Journal Title

      Transactions of Information Processing Society of Japan vol.41

      Pages: 2782-2793

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Study on Asymmetric Satellite Network Using Combination of FDMA and TDMA2001

    • Author(s)
      K.ASAI, N.OSAWA, K.KONDO, K.ISHIHARA
    • Journal Title

      2001 IEEJ Electronics, Information, and Systems Society Conference Proceedings

      Pages: II-505

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] On the data transmission scheme in inter-university satellite network2000

    • Author(s)
      K.Asai, N.Osawa, K.Kondo
    • Journal Title

      Proceedings of Asia-Pacific Symposium on Broadcasting and Communications

      Pages: 48-51

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reliable multicast file transfer on the inter-university satellite network2000

    • Author(s)
      K.Asai, N.Osawa, K.Kondo, K.Yuki
    • Journal Title

      2000 International Conference on Communication Technology Proceedings

      Pages: 1137-1140

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 大学間衛星ネットワークにおけるデータ伝送方式の検討2000

    • Author(s)
      浅井紀久夫, 大澤範高, 近藤喜美夫
    • Journal Title

      2000年電子情報通信学会通信ソサイエティ大会

      Pages: B.3.18

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reliable multicast file transfer on the inter-university satellite network2000

    • Author(s)
      K.Asai, N.Osawa, K.Kondo, K.Yuki
    • Journal Title

      Proceedings of 2000 International Conference on Communication Technology (ICCT2000)

      Pages: 1137-1140

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Study on data transmissions scheme in inter-university satellite network2000

    • Author(s)
      K.Asai, N.Osawa, K.Kondo
    • Journal Title

      2000 IEICE Society Conference Proceedings

      Pages: B-3-18

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Web-based remote control of the inter-university satellite network1999

    • Author(s)
      K.Asai, N.Osawa, Y.Y.Sugimoto, K.Yuki, K.Kondo
    • Journal Title

      Advanced Research in Computer and Communications in Education (IOS Press)

      Pages: 940-941

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] スペース・コラボレーション・システムにおけるデータ伝送サービスと品質に関する検討1999

    • Author(s)
      浅井紀久夫, 大澤範高, 杉本裕二, 結城皖曠, 近藤喜美夫
    • Journal Title

      電子情報通信学会技術報告ET99-41

      Pages: 17-24

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Web-based remote control of the inter-university satellite network1999

    • Author(s)
      K.Asai, N.Osawa, Y.Y.Sugimoto, K.Yuki, K.Kondo
    • Journal Title

      Advanced Research in Computer and Communications in Education, IOS Press

      Pages: 940-941

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Study of data transmission service and its quality on the space collaboration system1999

    • Author(s)
      K.Asai, et al.
    • Journal Title

      Technical Report of IEICE ET99-41

      Pages: 17-24

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

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Published: 2006-07-11  

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