An exploratory study of emotional speech production using functional data analysis techniques
An exploratory study of emotional speech production using functional data analysis techniques
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发表时间：
2006
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通讯作者：
Sungbok Lee;E. Bresch;Shrikanth S. Narayanan
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作者：
Sungbok Lee;E. Bresch;Shrikanth S. Narayanan
使用电磁清晰度成像(EMA)数据和使用快速磁共振成像(MRI)技术获取的声道数据来研究与情感表达相关的语音清晰度。这些数据使用功能数据分析(FDA)技术进行发音计时和声道形状分析。研究发现，与目标词段产生相关的舌尖运动的EMA轨迹在本研究所考察的不同情绪中非常相似，这表明语言实现的发音动作在情绪编码过程中基本保持不变。声道形状的功能主成分分析结果也支持这一观察结果。发音的运动范围和速度(即发音的方式)主要是为了表达情感而调整的。然而，在这项研究中观察到的另一个有趣的发音行为是当情绪变化时舌尖位置的水平移动。说话人的这种策略可以促进情感对比的任务，只要发音位置的这种变化不会掩盖语言对比。(由NIH，ONR-MURI支持)
Speech articulations associated with emotion expression were investigated using electromagnetic articulography (EMA) data and vocal tract data acquired using a fast magnetic resonance imaging (MRI) technique. The data are explored using functional data analysis (FDA) techniques for articulatory timing and vocal tract shape analyses. It is observed that the EMA trajectories of tongue tip movements associated with the production of a target word segment are quite similar across emotions examined in this study, suggesting that articulatory maneuvers for linguistic realization are largely maintained during emotion encoding. Results of the functional principal component analysis of the vocal tract shapes also support this observation. Mainly, the articulatory movement range and velocity (i.e., the manner of articulation) are modulated for emotional expression. However, another interesting articulatory behavior observed in this study is the horizontal shift of tongue tip positioning when emotion changes. Such a strategy by a speaker may facilitate the task of emotional contrast as long as such a variation of the place of articulation does not obscure linguistic contrast. (Supported by NIH, ONR-MURI)