The effect of reduced vowel working space on speech intelligibility in Mandarin-speaking young adults with cerebral palsy
The effect of reduced vowel working space on speech intelligibility in Mandarin-speaking young adults with cerebral palsy
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DOI：
10.1121/1.1898623
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发表时间：
2005-06-01
影响因子：
2.4
通讯作者：
Kuhl, PK
中科院分区：
文献类型：
--
作者：
Liu, HM;Tsao, FM;Kuhl, PK
本研究的目的是使用声学和感知方法来检查元音工作空间减少对构音障碍者言语清晰度的影响。在实验 1 中，研究了患有脑瘫的说普通话的年轻人的元音工作空间区域和言语清晰度之间的声感知关系。受试者使用正常语速大声朗读 18 个包含元音 /i/、/a/ 和 /u/ 的双音节单词。每个说话者的话语都被三个普通听众识别出来。正确元音和单词识别的百分比分别计算为元音可懂度和单词可懂度。结果显示，与十名年龄匹配的对照者相比，患有脑瘫的说话者表现出更小的元音工作空间区域。元音工作空间面积与元音可懂度（r=0.632，p < 0.005）和单词可懂度（r=0.684，p=0.005）显着相关。实验 2 检查了扩展元音工作空间的标记是否被认为是更好的元音范例，并用比缩小元音工作空间的标记更大的感知空间来表示。感知实验的结果支持了这一预测。患有脑瘫的说话者扭曲的元音构成了一个较小的声学空间，导致听众的元音间感知距离缩小。 (c) 2005 年美国声学学会。
The purpose of this study was to examine the effect of reduced vowel working space on dysarthric talkers' speech intelligibility using both acoustic and perceptual approaches. In experiment 1, the acoustic-perceptual relationship between vowel working space area and speech intelligibility was examined in Mandarin-speaking young adults with cerebral palsy. Subjects read aloud 18 bisyllabic words containing the vowels /i/, /a/, and /u/ using their normal speaking rate. Each talker's words were identified by three normal listeners. The percentage of correct vowel and word identification were calculated as vowel intelligibility and word intelligibility, respectively. Results revealed that talkers with cerebral palsy exhibited smaller vowel working space areas compared to ten age-matched controls. The vowel working space area was significantly correlated with vowel intelligibility (r=0.632, p < 0.005) and with word intelligibility (r=0.684, p=0.005). Experiment 2 examined whether tokens of expanded vowel working spaces were perceived as better vowel exemplars and represented with greater perceptual spaces than tokens of reduced vowel working spaces. The results of the perceptual experiment support this prediction. The distorted vowels of talkers with cerebral palsy compose a smaller acoustic space that results in shrunken intervowel perceptual distances for listeners. (c) 2005 Acoustical Society of America.