Phonetic variation in dysarthric speech as a function of sampling task.
Phonetic variation in dysarthric speech as a function of sampling task.
复制标题
构音障碍语音中的语音变化作为采样任务的函数。
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Gerard J. Docherty
中科院分区：
文献类型：
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作者：
Adam Brown;Gerard J. Docherty
先前的研究已经证明了正常说话者在阅读和自发语音任务中的语音表现是不同的。这项研究的目的是调查在不同语言取样任务中是否也发现了类似的差异。本文采用声学方法研究了5名轻度运动障碍说话者和5名对照者的音节和韵律参数。结果表明，呼吸暂停的位置、非重读元音的持续时间和发声时间在不同类型的说话者产生的语音中受到不同采样任务的影响。研究结果表明，诵读困难的人产生的阅读材料可能并不完全代表他们的自发语言。对临床实践的初步意义进行了讨论。研究结果指出，需要进一步的研究来调查这种差异的程度及其对构音障碍评估的影响，迄今为止，这种评估主要依赖于阅读材料。
Previous studies have demonstrated a number of ways in which normal speakers' phonetic performance varies across reading and spontaneous speech tasks. This study set out to investigate whether similar differences across speech sampling tasks were found in a mixed group of dysarthric subjects. A selection of segmental and prosodic parameters were investigated acoustically in the performance of five mild dysarthric speakers and five matched control subjects. The results demonstrated that breath-pause position, unstressed vowel duration and voice-onset time were subject to variation across sampling task in the speech produced by different types of dysarthric speaker. The results suggest that read material produced by dysarthric speakers may not be wholly representative of those speakers' spontaneous speech. Preliminary implications for clinical practice are discussed. The findings point to the need for further research to investigate the extent of such differences and their implications for dysarthria assessment, which up to the present has relied predominantly on read material.