研究发现舌部形态差异可作为语音识别的个体特征依据。
Articulatory strategy in vowel production as a basis for speaker discrimination
- 通过分析40名英语使用者的舌形数据，提取发音时的个体特征。
- 前部舌形变化比后部更具区分度，舌体大小辨识力最强。
- 仅当特征不共变时，纯形状信息可媲美大小与形状结合的效果。
个体发音方式存在差异，同时受解剖与生物力学限制。本研究探究了元音发音中的发音策略是否足以成为说话人识别的基础。基于英国西北部40名英语使用者的舌形数据，采用广义普鲁斯特分析，并在似然比框架下评估正交舌形特征的说话人辨别能力。结果显示，舌体大小是区分个体中最具辨别力的维度；而舌前部的形状变化普遍优于后部。当特征间无说话人层面的共变时，仅依靠形状信息即可达到与大小加形状信息相当的说话人特异性水平。
原文摘要 · Abstract (English)
The way speakers articulate is well known to be variable across individuals while at the same time subject to anatomical and biomechanical constraints. In this study, we ask whether articulatory strategy in vowel production can be sufficiently speaker-specific to form the basis for speaker discrimination. We conducted Generalised Procrustes Analyses of tongue shape data from 40 English speakers from the North West of England, and assessed the speaker-discriminatory potential of orthogonal tongue shape features within the framework of likelihood ratios. Tongue size emerged as the individual dimension with the strongest discriminatory power, while tongue shape variation in the more anterior part of the tongue generally outperformed tongue shape variation in the posterior part. When considered in combination, shape-only information may offer comparable levels of speaker specificity to size-and-shape information, but only when features do not exhibit speaker-level co-variation.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。