嘴唇声:空气动力学,声学和喉相互作用
Sophia Dove1, Ronald C Scherer1, E M Weekly2
1Bowling Green State University, Bowling Green, OH.
概括
嘴唇声,一种声乐练习,降低了喉引力,改变了空气流动力学. 在唇动期间,喉尺度和基本频率发生了意想不到的变化,揭示了复杂的语音生产机制.
科学领域:
- 职业教育学专业教育学
- 语音科学是一种语言科学.
- 声学语音学的声音学.
背景情况:
- 半闭声道 (SOVT) 练习,如唇,被声乐专业人士广泛使用.
- 了解SOVT练习的生理机制对于有效的语音训练至关重要.
- 之前的研究已经探索了SOVT练习的各个方面,但在唇声期间空气动力学和声学信号的相互作用需要进一步调查.
研究的目的:
- 为了研究空气动力学和声学信号之间的关系,在唇.
- 分析唇声对喉参数和空气流动的影响.
- 为了检查表达与非表达的嘴唇声对口腔空气压力的影响.
主要方法:
- 一位受过训练的女歌手表演了有声和无声的唇,以及 /bap:/ 音节串.
- 录制了音频,空气流,电造影 (EGG) 和口腔空气压力信号.
- 使用EGG信号来计算EGGW25,EGG高度 (EGGH) 和基本频率 (fo).
主要成果:
- 嘴唇声显著降低EGGW25 (一个测量球 adduction) 与母音的生产相比.
- 在发声的嘴唇声中,口腔气压保持在大气压以下,而在无声的嘴唇声中则更高.
- 在唇旋周期内,EGGW25和EGGH随着嘴唇的打开而下降,而fo则增加,有时超过目标频率.
结论:
- 唇声有助于减少喉 adduction,由较低的EGGW25表示.
- 这项研究揭示了跨球压力,球引和嘴唇分离期间的空气流之间的复杂,反直觉的关系.
- 嘴唇分离期间的基本频率变化大于预期,而无声的嘴唇声显示出更高的口腔压力,这是由于缺乏状抵抗.
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