J1050105 歯茎摩擦音/s/の口腔単純形状モデルを用いた空力音響解析

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タイトル別名
  • J1050105 Aeroacoustic analysis of sibilant /s/ simplified vocal tract model

抄録

In order to explore the essential characteristics to pronounce sibilant fricative /s/, we prepared the simplified vocal tract models and compared the sound and the flow characteristics in the models with that in the realistic model which was constructed from the CT images. The two simplified models having a constriction at center position (CN model) and upper position (UN model) were proposed. The far-field sounds generated from the models were measured by a microphone. The large-eddy simulation was conducted and aeroacoustic sound sources was calculated in the models. The sound generated from UN model was similar to the sound generated from the realistic model compare to that of CN model. The velocity fluctuation and the sound source nearby the exit of constriction of CN model were larger than that of UN model and realistic model, indicating that reduction of the turbulent flow in the upstream of incisors is essential to pronounce sibilant /s/.

収録刊行物

  • 年次大会

    年次大会 2015 (0), _J1050105--_J1050105-, 2015

    一般社団法人 日本機械学会

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