Vibratory regime classification of infant phonation
Vibratory regime classification of infant phonation
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DOI：
10.1016/j.jvoice.2006.12.009
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发表时间：
2008-09-01
期刊：
影响因子：
2.2
通讯作者：
Robinson, Rebecca B.
中科院分区：
文献类型：
--
作者：
Buder, Eugene H.;Chorna, Lesya B.;Robinson, Rebecca B.
婴儿的发声在许多方面都有很大的变化，包括发声组织产生声音信号的基本振动模式。先前的研究已经确定了正常婴儿发声中非模态发声类型的定期出现。声门就像许多振荡系统一样，由于元素之间的非线性关系，可能会以代表非线性动力学数学框架内理论上分类的确定性模式的方式振动。婴儿的前语言探索呈现出如此多样的发声，以至于有可能有效地找到非线性动力学理论预测的所有振动类别。当前的报告为此类振动机制的所有重要子集定义了声学标准，并表明分析人员可以接受培训，可靠地使用这些标准进行分类，其中包括记录语料库中婴儿发声的所有实例。因此，从所有发声都被分类的意义上来说，该方法是内部全面的，但从代表所有声音品质的意义上来说，该方法并不是详尽的。使用由此开发的方法，本研究还表明，这些发声类型的分布在生命第一年的录音过程中存在显着差异，表明发育变化。因此，政权分类方法能够跟踪可能表明机制成熟的变化、发声控制类别的学习以及跨社会背景的发声可能的不同使用。
Infant phonation is highly variable in many respects, including the basic vibratory patterns by which the vocal tissues create acoustic signals. Previous Studies have identified the regular Occurrence of nonmodal phonation types in normal infant phonation. The glottis is like many oscillating systems that, because of nonlinear relationships among the elements, may vibrate in ways representing the deterministic patterns classified theoretically within the mathematical framework of nonlinear dynamics. The infant's preverbal vocal explorations present such a variety of phonations that it may be possible to find effectively all the classes of vibration predicted by nonlinear dynamic theory. The current report defines acoustic criteria for all important Subset of such vibratory regimes, and demonstrates that analysts can be trained to reliably use these criteria for a classification that includes all instances of infant phonation ill the recorded corpora. The method is thus internally comprehensive in the sense that all phonations are classified, but it is not exhaustive in the sense that all vocal qualities are thereby represented. Using the methods thus developed, this study also demonstrates that the distributions of these phonation types vary significantly across sessions of recording in the first year of life, suggesting developmental changes. The method of regime classification is thus capable of tracking changes that may be indicative of maturation of the mechanism, the learning of categories of phonatory control, and the possibly varying use of vocalizations across social contexts.