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Analyzes of Nonlinear Vocal Variability and Controllability of Neural Voice Disorders

Research Project

Project/Area Number 07832006
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section時限
Research Field 非線形科学
Research InstitutionUniversity of Tokyo

Principal Investigator

IMAIZUMI Satoshi  University of Tokyo, Faculty of Medicine, Associate Professor, 医学部, 助教授 (80122018)

Co-Investigator(Kenkyū-buntansha) NIIMI Seiji  University of Tokyo, Faculty of Medicine, Professor, 医学部, 教授 (00010273)
KIRITANI Shigeru  University of Tokyo, Faculty of Medicine, Professor, 医学部, 教授 (90010032)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1996: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1995: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsVoice disorder / Neural voice disorders / SPD / Vocal variability / Voice contrallability / Acoustic analysis / Fractal dimension / Nonlinearlity / 非線形理論 / 音声振戦 / 可制御性
Research Abstract

The variability and controllability of vocal fundamental frequency (F0) are investigated by analyzing the acoustic and perceptual characteristics of sustained vowel samples recorded from patients with spasmodic dysphonia (SPD) as well as patients with various types of laryngeal disorders and normal controls. All the pathological groups show larger variations in F0 or lower controllability than the normal controls. The voice segments perceptually judged as non-sporadic show significantly larger variations in F0 than the normal controls. From the voice segments perceptually judged as sporadic, instantaneous changes in F0 or in amplitude, chaotic changes in voice waveform such as bifurcations are observed. Based on the obtained results, a model of normal and disordered voice control mechanism is proposed, in which morphological and neural abnormalities affect voice variability. The acoustic analysis method described here is found beneficial in analyzing voice variability and controllability, and can provide useful information to know normal and disordered voice control mechanisms.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Imaizumi,S.,et al.: "Listener Adaptive Characteristics of Vowel Devoicing in Japanese Dialogue" J.Acoust.Soc.Amer.98. 768-778 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shimura,Y.and Imaizumi,S.: "Listener and Context Dependency in the Perception of Emotional Aspects of Infant Voice" Acta Paediatrica Japonica. 38. 648-656 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirose,H.,Imaizumi,S.and Yamori,M.: "Voice Quality in Patients with Neurological Disorders" Vocal Fold Physiology,Voice Quality Control. 235-248 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 今泉 敏他: "声の変動特性 -音響分析による評価-" 喉頭. 8. 116-122 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 今泉 敏: "ことばの記録と評価" JOHNS. 12. 835-840 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 今泉 敏: "病的音声の声質" 日本音響学会誌. 51. 887-892 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S., Hayashi, A., and Deguchi, T.: "Listener adaptive characteristics of vowel devoicing in Japanese dialogue." J.Acoust. Soc. Amer.98. 768-778 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S., Mori, K., Kiritani, S.and M.Yumoto: "Neural Representation of Concurrent Sounds." Electroencephalography and Clinical Neurophysiology.Suppl. 47. 191-197 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hosoi, H., Murata, K.and Imaizumi: "A new method of measurement of most comfortable loudness" Audiology and Neuro-Otology. 1. 234-242 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shimura, Y.and Imaizumi, S.: "Listener and context dependency in the perception of emotionalaspects of infant voice." Acta Paediatrica Japonica.38. 648-656 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirose, H., Imaizumi, S.and Yamori, M.: "Voice quality in patients with neurological disorders." Vocal Fold Physiology, Voice Quality Control, edited by O.Fujimura and M.Hirano, Singular Publishing Group, Inc. San Diego. 235-248 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shimura, Y.and Imaizumi, S.: "Emotional information in vocaliztion of young infants." Jpn. J.Logop. and Phoniatr.36. 365-371 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S., Abdoerrachman, H., Niimi, S., and Kumada, M.: "Vocal variability : its acoustic evaluation." The Larynx Jpn.8. 116-122 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S.: "Pathological voice quality" J.Acoust. Soc. Jpn.51. 887-892 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S.: "Recording and evaluation of speech" JOHNS. 12. 835-840 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shimura, Y.and Imaizumi, S.: "Infants are communicating" J.Acoust. Soc. Jpn.52 (7). 547-551 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi, S.and Shimura, Y.: "Acoustic Environments in the Womb." Imago. 7. 56-62 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Imaizumi,S.,et.al.: "Listener Adaptive Characteristics of Vowel Devoicing in Japanese Dialogue" J.Acoust.Soc.Amer.98. 768-778 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shimura,Y.and Imaizumi,S.: "Listener and Context Dependency in the Perception of Emotional Aspects of Infant Voice" Acta Paediatrica Japonica. 38. 648-656 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hirose,H.,Imaizumi,S.and Yamori,M.: "Voice Quality in Patients with Neurological Disorders" Vocal Fold Physiology,Voice Quality Control. 235-248 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 今泉敏他: "声の変動特性-音響分析による評価-" 喉頭. 8. 116-122 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 今泉敏: "ことばの記録と評価" JOHNS. 12. 835-840 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 今泉敏: "病的音声の声質" 日本音響学会誌. 51. 887-892 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Imaizumi,A.Hayashi,T.Deguchi: "Listener adaptive characteristics of vowel devoicing in Japanese dialogue" J.Acoust.Soc.Am.98. 768-778 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 今泉敏: "病的音声の声質" 日本音響学会. 51. 887-892 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Kiritani,H.Imagawa,H.Hirose: "Vocal cord vibration in the production of consonants-Observation by means of high speed digital imaging using a fiber scope" J.Acoust.Soc.Jpn(E). 17. 179-195 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Maekawa,S.Kiritani,H.Hirose: "Electromyographic study of focus and accent in Japanese" J.Acoust.Soc.Jpn(E). 16. 291-298 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 志村洋子,今泉敏: "生後2カ月の乳児の音声における非言語情報" 音声言語医学. 36. 365-371 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 今泉敏,志村洋子: "胎内の音環境" imago. 7. 56-62 (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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