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1995 Fiscal Year Final Research Report Summary

Study fora Practical Use of an Electolarynx with a Pitch Control Function Using Expiration

Research Project

Project/Area Number 06559001
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 広領域
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

IFUKUBE Tohru  Hokkaido University, Research Institute for Electronic Science, Professor, 電子科学研究所, 教授 (70002102)

Co-Investigator(Kenkyū-buntansha) SUGAI Yasunori  Densei Inc, Researcher, 研究員
MATSUSHIMA Junichi  Hokkaido University, School of Medicine, Lecture, 医学部, 講師 (60173829)
INO Shuichi  Hokkaido University, Research Institute for Electronic Science, Lecture, 電子科学研究所, 講師 (70250511)
TAKAHASHI Makoto  Hokkaido University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (10154858)
Project Period (FY) 1994 – 1995
KeywordsSpeech / Welfare technology / Artificiallarynx / Intonation / Substitute speech / Laryngectonee
Research Abstract

An electrolarynx is one of the artificial larynges for people who have failed to master the other substitute speech. However, this prosthesis makes it difficult to produce phonetic information such as intonation and accent. In order to improve a conventional electrolarynx, we have proposed a new method that can allow laryngectomees to control voice intonation by using their respiration.
This device consists of three parts. The first part is a pressure sensor that can detect expiration air pressure produced from a stoma made by a surgical incision into the neck. The second part is a transformation circuit that can convert air pressure into a pitch frequency for voice. The third part is an electromechanical vibrator that can be attached to the neck. This method was evaluated through the following two experiments as a parameter of a transform function. The first one was an experiment to measure the accuracy of pitch control using the respiration of laryngectomees and the second one was psychophysical experiments regarding the degree of naturalness of the electrolarynx voice.
From the experimental results, the optimal transform function was found to be F=60+25xP,where F is the pitch frequency in Hz and P is the expiration pressure in cmH20. The pitch pattern of the electric larynx voice became clearly similar to the pattern produced from a normal subject after one day training. We have decided to manufacture the new device for the people who can not master the substitute speech or have just had their larynx removed.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] N.Uemi,T. Ifukube, M. Takahashi, J. Matsushima: "Design of a New Electrolarynx having a pitch Control Function" IEEE International Workshop on Robot and Human Communication. 198-203 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 上見憲弘、伊福部達、高橋誠、松島純一: "ピッチ周波数制御型人工喉頭提案との評価" 電子情報通信学会論文誌D-II. J78-D11(3). 571-578 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 閔惠貞、高橋誠、西澤典子、伊福部達 他: "胸骨舌骨筋の筋電位による電気人工喉頭の制御" 医用電子と生体工学. 32(4). 69-77 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 上見憲弘、伊福部達、高橋誠、松島純一: "呼気圧によるピッチ周波数制御のついた人工喉頭の開発" 医用電子と生体工学. 33(1). 7-14 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Ifukube,N Uemi, M. Takahashi, and J. Matsushima: "An Electrolaryns having a Pitch Control Function" Proc,World Congress on Medical Physics and Biomedical Engineering. 39a. 895 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 橋場参生、山本寧、伊福部達 他: "音声の自然性を備えた電気人工喉頭との開発研究(第2報)" 北海道立工業試験場報告. 294. 143-150 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊福部 達: "音の福祉工学" コロナ社,(印刷中), (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊福部 達: "ブリタニカ国際大百科辞典:生体工学" TBSブリタニカ (株)I,E,D, 5 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Norihiro Uemi, Tohru Ifukube, Makoto Takahashi and Jun'ichi Matsushima: "Design of a New Electrolarynx having a Pitch Control Function" IEEE International Workshop On ROBOT AND HUMAN COMMUNICATION. 98-203 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Norihiro Uemi, Tohru Ifukube, Makoto Takahashi, and Jun'ichi Matsushima: "Proposal of an Electrolarynx Having a Pitch Frequency Control Function and Its Evaluation" The Transactions of the Institute of Electronics, Information, and Communication Engineers D-II. vol. J78-DII,No. 3. 571-578 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Heajung Min, Makoto Takahashi, Noriko Nishizawa, Shinji Nishizawa, Tohru Ifukube, Yukio Inuyama: "Control of the Sternohyoid Muscle for an Electrolarynx" Japanese Journal of Medical Electronics and Biological Engineering. vol. 32, No. 4. 69-77 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Norihiro Uemi, Tohru Ifukube, Makoto Takahashi, and Jun'ichi Matsushima: "Development of an Electrolarynx Having a Pitch Frequency Control Function by Using Expiration Pressure" Japanese Journal of Medical Electronics and Biological Engineering. vol. 33, No. 1. 7-1 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ifukube, N.Uemi, M.Takahashi, and J.Matsushima: "An Electrolarynx having a Pitch Control Function" Proc. World Congress on Medical Physics and Biomedical Engineering. volume 39a. 895 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mitsuo Hashiba, Yasushi Yamamoto, Yoshinori Yamaguchi, Yasunori Sugai, Norihiro Uemi, Tohru Ifukube: "Development of an Electro-larynx with Naturality of Voice (PartII)" Hokkaido Industrial Research Institute Report. (No. 294). 143-150 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tohru Ifukube: "Development of Electrolarynx with Naturalty of voice" Corona Inc.(to be appear). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tohru Ifukube: "Biomedical Engineering, Britannica International Encyclopaedia" TBS Britannica Inc. 361-365 (1996)

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

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Published: 1997-03-04  

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