Acoustic roles of the laryngeal cavity in vocal tract resonance

DOI PDF 被引用文献9件
  • Hironori Takemoto
    ATR Human Information Science Laboratories , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0288 Japan
  • Seiji Adachi
    ATR Human Information Science Laboratories , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0288 Japan
  • Tatsuya Kitamura
    ATR Human Information Science Laboratories , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0288 Japan
  • Parham Mokhtari
    ATR Human Information Science Laboratories , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0288 Japan
  • Kiyoshi Honda
    ATR Human Information Science Laboratories , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0288 Japan

抄録

<jats:p>The acoustic effects of the laryngeal cavity on the vocal tract resonance were investigated by using vocal tract area functions for the five Japanese vowels obtained from an adult male speaker. Transfer functions were examined with the laryngeal cavity eliminated from the whole vocal tract, volume velocity distribution patterns were calculated, and susceptance matching analysis was performed between the laryngeal cavity and the vocal tract excluding the laryngeal cavity (vocal tract proper). It was revealed that the laryngeal cavity generates one of the formants of the vocal tract, which is the fourth in the present study. At this formant, the resonance of the laryngeal cavity (the 1∕4 wavelength resonance) induces the open-tube resonance of the vocal tract proper (the 3∕2 wavelength resonance). At the other formants, on the other hand, the vocal tract proper acts as a closed tube, because the laryngeal cavity has only a small contribution to generating these formants and the effective closed end of the whole vocal tract is the junction between the laryngeal cavity and the vocal tract proper.</jats:p>

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