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1997 Fiscal Year Final Research Report Summary

Research on Acoustic Approach of Speech Quality Model

Research Project

Project/Area Number 08650417
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

MIKI Nobuhiro  Hokkaido Univ.Graduate School of Eng., Ass.Pro., 大学院・工学研究科, 助教授 (30002314)

Project Period (FY) 1996 – 1997
KeywordsSpeech Quality / Source Model / Acoustic Analysis / FEM
Research Abstract

In the speech production system, we investigated the relation between the parameters of 3-D figure of the vocal tract and the speech quality of real speech. For vowels with different pitch accent as frequency variation on acoustic source, spectral analysis is performed for the part of the speech waveform corresponding the glottal closure ; the data of the several male adults are used. Since the number of the sampled data is very small in the glottal closure, it is so diffcult to analyze the data using ordinal method, we adopted our new method of the short-time analysis method using the mapping. Using our method, we could estimate stably the formant in the glottal closure, and showed that even for isolated vowels the formant can be moved by the pitch variation. Moreover, we showed a new estimation method for the glottal wave by using our analysis algorithm, and excellent result on the estimation.
Using Finite Element Method (FEM), we performed numerical simulation of acoustical analysis for the shape model of the vocal tract which was measured by MRI.By this FEM simulation, we investigated the effect of shape parameters, small sinuses near the glottis, and wall impedance of vocal tract for the spectral characteristics. As the result, we showed that the spectrum is influenced by the variation of the shape parameters and the small sinuses, and by the radiation impedance at the lips ; especially on higher formants.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Kuroda, Miki and Ogawa: "Pich dependency of formants and its individuality in Jpanese stationary vowels" ASA & ASAJ Third Joint meeting. 905-908 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Aoyama, Matsuzaki, Miki and Ogawa: "FEM analysis of teree-dimentionalvocal tract model with branches" ASA & ASAJ Third Joint meeting. 851-854 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miki, Lu, Yokoyama, and Ogawa: "3-D FEM Analysis of Glottal Flow Using a Direct Simelation Method" Proc.Int.Workshop“Speech and Com-puter". 63-66 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松崎・三木・小川: "音響管内の3次元の音響的特徴量の有限要素法による解析" 電子情報通信学会論文誌(A). J80-A. 1351-1359 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉川・三木・小川: "声門閉鎖区間情報を利用した音源抽出の アルゴリズムに関する提案" 電子情報通信学会論文誌(A). J81-A. 303-311 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松崎・三木・小川: "だ円音響管モデルを用いた日本語母音の3次元有限要素解析" 電子情報通信学会論文誌(A). J81-A(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kuroda, Miki, and Ogawa: "Pitch dependency of formants and its individuality in Japanese stationary vowels" ASA&ASAJ Third Joint meeting. 905-908 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Aoyama, Matsuzaki, Miki and Ogawa: "FEM analysis of three-dimensional vocal tract model with branches" ASA&ASAJ Third Joint meeting. 851-854 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miki, Lu, Yokoyama, and Ogawa: "3-D FEM Analysis of Glottal Flow Using a Direct Simulation Method" Proc.Int.Workshop "Speech and Computer". 63-66 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuzaki, Miki, and Ogawa: "FEM Analysis of Three-Dimensional Acoustic Characteristics in Sound Tube" IEICE J80-A. 9. 1351-1359 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshikawa, Miki, and Ogawa: "A Proposal for Estimation Algorithm of Glottal Waveform with Glottal Closure Information" IEICE J81-A. 3. 303-311 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuzaki, Miki, and Ogawa: "3-D Finite Element Analysis of Japanese Vowels in Elliptic Sound Tube Model" IEICE J81-A. (to be published). (1998)

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

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Published: 1999-03-16  

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