PDF(Pubmed)
Abstract：
How we produce and perceive voice is constrained by laryngeal physiology and biomechanics. Such constraints may present themselves as principal dimensions in the voice outcome space that are shared among speakers. This study attempts to identify such principal dimensions in the voice outcome space and the underlying laryngeal control mechanisms in a three-dimensional computational model of voice production. A large-scale voice simulation was performed with parametric variations in vocal fold geometry and stiffness, glottal gap, vocal tract shape, and subglottal pressure. Principal component analysis was applied to data combining both the physiological control parameters and voice outcome measures. The results showed three dominant dimensions accounting for at least 50% of the total variance. The first two dimensions describe respiratory-laryngeal coordination in controlling the energy balance between low- and high-frequency harmonics in the produced voice, and the third dimension describes control of the fundamental frequency. The dominance of these three dimensions suggests that voice changes along these principal dimensions are likely to be more consistently produced and perceived by most speakers than other voice changes, and thus are more likely to have emerged during evolution and be used to convey important personal information, such as emotion and larynx size.
摘要：
我们如何产生和感知声音受到喉生理学和生物力学的限制。这样的约束可以将其自身呈现为在说话者之间共享的语音结果空间中的主要维度。本研究试图在语音产生的三维计算模型中识别语音结果空间中的此类主要维度以及潜在的喉部控制机制。使用声带几何形状和刚度的参数变化进行了大规模语音模拟，声门间隙,声道形状,声门下压.主成分分析应用于结合生理控制参数和语音结果测量的数据。结果表明，三个主要维度至少占总方差的50％。前两个维度描述了呼吸-喉部协调在控制产生的声音中低频和高频谐波之间的能量平衡。第三个维度描述了基频的控制。这三个维度的优势表明，沿着这些主要维度的语音变化可能比其他语音变化更一致地产生和被大多数说话者感知，因此更有可能在进化过程中出现并被用来传达重要的个人信息，如情绪和喉的大小。
