Intelligibility as a linear combination of dimensions in dysarthric speech
Intelligibility as a linear combination of dimensions in dysarthric speech
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DOI：
10.1016/s0021-9924(02)00065-5
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发表时间：
2002-05-01
影响因子：
1.7
通讯作者：
Van De Heyning, PH
中科院分区：
文献类型：
--
作者：
De Bodt, MS;Huici, MEHD;Van De Heyning, PH
对79名以英语为母语的发音障碍患者的语音样本，由两名有经验的法官用知觉评定量表进行评判，该量表涵盖了言语产生的四个主要维度：嗓音质量、发音、鼻音和韵律以及总体可理解性。以确定四个基本维度对本研究组清晰度的相对影响。采用多元回归模型。该模型表明，可理解性可以表示为加权感知维度的线性组合(R-2=0.89)。这一表达揭示了个体维度对整体可理解性的相对重要性。清晰度被证明是提高语言清晰度的最大因素。一组16名关节功能障碍患者(母语为荷兰语)作为对照组，以评估表达的有效性。对于75%的患者，判断和计算的评分(在95%的预测区间内)是一致的。这些发现可能有助于构建一个更平衡的功能可理解性测量。学习结果：1.可理解性可以用加权的单一维度的线性组合来表示，表明每个维度的相对影响。清晰度对清晰度的影响占主导地位，但包括“鼻音”这一维度。“声音”和“韵律”导致了对可理解性的更平衡的估计。(C)2002 Elsevier Science Inc.保留所有权利。
Speech samples of 79 dysarthric patients (native speakers of English) were judged by two experienced judges by means of a perceptual rating scale covering the four main dimensions of speech production: voice quality, articulation, nasality and prosody as well as overall intelligibility. In order to determine the relative influence of the four basic dimensions on intelligibility in this study group. a multiple regression model was applied. This model shows that intelligibility can be expressed as a linear combination of weighted perceptual dimensions (R-2 = 0.89). This expression reveals the relative importance of the individual dimensions on overall intelligibility. Articulation is shown to be the strongest contributor to intelligibility. A group of 16 dysarthric patients (native speakers of Dutch) was used as a control group in order to evaluate the validity of the expression. Judged and calculated ratings (within the 95% prediction intervals) were in agreement for 75% of the patients. These findings may contribute in the construction of a better balanced measure of functional intelligibility.Learning outcomes:1. Intelligibility can be expressed by a linear combination of weighted single dimensions indicating the relative impact of each of them.2. The impact of articulation on intelligibility is dominant but inclusion of the dimensions "nasality". "voice" and "prosody" results in a more balanced estimation of intelligibility. (C) 2002 Elsevier Science Inc. All rights reserved.