A simulation study on the effect of glottal boundary conditions on vocal tract formants

Yasufumi Uezu, Tokihiko Kaburagi

研究成果: ジャーナルへの寄稿Conference article

1 引用 (Scopus)

抄録

In the source-filter theory, the complete closure of the glottis is assumed as a glottal boundary condition. However, such assumption of glottal closure in the source-filter theory is not strictly satisfied in actual utterance. Therefore, it is considered that acoustic features of the glottis and the subglottal region may affect vocal tract formants. In this study, we investigated how differences in the glottal boundary conditions affect vocal tract formants by speech synthesis simulation using speech pro-duction model. We synthesized five Japanese vowels using the speech production model in consideration of the source-filter interaction. This model consisted of the glottal area polyno-mial model and the acoustic tube model in the concatenation of the vocal tract, glottis, and the subglottis. From the results, it was found that the first formant frequency was affected more strongly by the boundary conditions, and also found that the open quotient may give the formant stronger effect than the maximum glottal width. In addition, formant frequencies were also affected more strongly by subglottal impedance when the maximum glottal area was wider.

元の言語英語
ページ(範囲)2292-2296
ページ数5
ジャーナルProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
2017-August
DOI
出版物ステータス出版済み - 1 1 2017
イベント18th Annual Conference of the International Speech Communication Association, INTERSPEECH 2017 - Stockholm, スウェーデン
継続期間: 8 20 20178 24 2017

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Simulation Study
Boundary conditions
Filter
Acoustics
Closure
Speech Production
Speech Synthesis
Speech synthesis
Model
Concatenation
Impedance
Tube
Quotient
Strictly
Simulation
Vocal Tract
Boundary Conditions
Formants
Interaction
Glottis

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modelling and Simulation

これを引用

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