音源位置及其在日本无声"全球"摩擦式生产中的作用
Tsukasa Yoshinaga1, Kikuo Maekawa2, Akiyoshi Iida3
1Osaka University, 1-3 Machikaneyama, Toyonaka, 560-8531, Japan.
The Journal of the Acoustical Society of America
|November 1, 2024
概括
声母[h]的声音可能不仅仅来自喉. 研究表明,[h]可以由声道上部的空气流收缩产生的,这挑战了传统的语音描述.
科学领域:
- 语音学 语音学 语音学
- 声学分析 声学分析
- 空气动力学 航空动力学
背景情况:
- 声音[h]传统上被归类为喉摩擦,这意味着它的来源完全在喉.
- 缺少关于[h]的纯粹球来源的经验证据.
- 了解精确的声音源位置对于准确的语音和语音制作模型至关重要.
研究的目的:
- 为了调查辅音[h]的声音源位置.
- 为了确定[h]的声音来源是否仅限于喉.
- 检查声源位置对声幅的影响.
主要方法:
- 通过静态磁共振成像 (MRI) 来从两个日语母语的人身上获得了三维[h]声道数据,在三个语音上下文中.
- 构建的烯酸声道复制品,通过提供空气流与各种状况 (吸入或绑架声) 来重现声音.
- 通过解决纳维埃-斯托克斯方程和分析声幅来估计声源位置.
主要成果:
- 在某些情况下,用开放的喉产生的声音幅度与3毫米的喉间隙产生的声音幅度相似 (在±3dB范围内).
- 在特定条件下,声源被确定在喉腔或在软 palates附近.
- 实时MRI显示了与机械实验中观察到的类似的口腔收缩,表明上关参与.
结论:
- 声音[h]不仅仅是在喉产生的.
- 在某些情况下,[h]的声音源涉及乱的空气流,由喉上收缩引起,特别是那些与下列母音相关的.
- 这一发现挑战了传统的喉摩擦分类,并突出了上声道在[h]产生中的作用.
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