Vocal Fold Vibratory Characteristics in Normal Female Speakers From High-Speed Digital Imaging
Vocal Fold Vibratory Characteristics in Normal Female Speakers From High-Speed Digital Imaging
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DOI：
10.1016/j.jvoice.2011.02.001
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发表时间：
2012-03-01
期刊：
影响因子：
2.2
通讯作者：
Bless, Diane M.
中科院分区：
文献类型：
--
作者：
Ahmad, Kartini;Yan, Yuling;Bless, Diane M.
该研究的目的是调查声带振动与语音质量之间的关系。检查从高速数字成像 (HSDI) 获得的喉部图像的开闭时序特性和扰动值。定制软件描绘了声门边缘，并使用基于希尔伯特变换的分析方法来提供声门扰动的客观量化。转换后的声门周期的叠加追踪提供了整体振动动态的视觉模式。在本文中，我们描述了如何使用这种方法来观察一组年轻女性说话者（N = 23）的振动特征。我们发现，没有声音不适且被认为声音正常的女性在发声时的声门振动模式方面并不是一个同质群体。他们的振动模式显示出与典型声音类似的特征，目标是清晰（50%）、压抑（27%）、呼吸声（15%）或混合质量（8%）。周期间频率和幅度方面的扰动范围很小并且不能区分模式。所有这些模式都产生了感知上正常的声音，这表明在正常的年轻说话者中，扰动水平对于判断可能比实际的闭合模式更重要。
The purpose of the study was to investigate relationships between vocal fold vibrations and voice quality. Laryngeal images obtained from high-speed digital imaging (HSDI) were examined for their open-closed timing characteristics and perturbation values. A customized software delineated the glottal edges and used the Hilbert transformbased method of analysis to provide objective quantification of glottal perturbation. Overlay tracings of the transformed glottal cycles provided visual patterns on the overall vibratory dynamics. In this paper, we described the use of this method in looking at vibratory characteristics of a group of young female speakers (N = 23). We found that, females with no voice complaints and who had been perceived to have normal voices were not a homogeneous group in terms of their glottal vibratory patterns during phonation. Their vibratory patterns showed characteristics similar to exemplar voices targeted to be clear (50%), pressed (27%), breathy (15%), or a mixed quality (8%). Perturbation range in terms of cycle-to-cycle frequency and amplitude was small and did not discriminate patterns. All these patterns yielded perceptually normal voices suggesting that in normal young speakers, the level of perturbation may be more important to the judgment than the actual pattern of closure.