在方言内和方言之间有动态声学元音距离
1Department of Linguistics, Ohio State University, Columbus, Ohio 43210, USA.
The Journal of the Acoustical Society of America
|October 14, 2024
概括
声学分析揭示了美国英语方言中的元音音如何不同. 新的动态测量比传统方法更有效地捕捉了母音相似性的区域差异.
科学领域:
- 语音学和声学 语音学和声学
- 社会语言学 社会语言学
- 计算语言学 计算语言学
背景情况:
- 声母的声学相似性在美国英语的区域方言之间有很大的差异.
- 传统的声学测量通常使用离散的时间点,可能缺少动态形式轨迹信息.
- 对于语言学研究来说,了解母音感知中的方言差异至关重要.
研究的目的:
- 应用和比较新的语言和口音距离措施,以评估说话者之间的母音类别相似性.
- 检查这些措施在捕获预测的美国英语区域方言变化的实用性.
- 在方言学中评估动态时间扭曲和形式轨迹分析的有效性.
主要方法:
- 音频频率切斯特拉系数 (MFCCs) 的动态时间变形 (DTW) 来评估随时间推移的光谱声学距离.
- 根-平均-平方 (RMS) 距离和一般化添加物混合模型 (GAMMs) 应用于选定的形成轨迹.
- 南方,新英格兰和北美英语方言之间的声学距离的比较.
主要成果:
- MFCC的DTW成功捕获了预测的南美英语母音相似性.
- RMS距离和GAMM捕获了南方,新英格兰和北方方言预测的母音相似性模式.
- GAMM解释了最多的变化,但不提供单一的距离值,与DTW和RMS不同.
结论:
- 动态声学测量,包括DTW和形式轨迹分析,对于研究方言元音变异非常有价值.
- 一般化的增材混合模型为捕捉复杂的方言模式提供了细微的方法.
- 这些方法提高了我们对各种美国英语方言的声学母音类别相似性的理解.
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