Sapienza C M, Walton S, Murry T
University of Florida, Department of Communication Sciences and Disorders, Gainesille 32611, USA.
J Speech Lang Hear Res. 1999 Feb;42(1):127-40. doi: 10.1044/jslhr.4201.127.
Acoustic phonatory events were identified in 14 women diagnosed with ADSD and compared to those of 14 women age-matched (+/-2 years) with no evidence of vocal pathology/dysfunction. The three acoustic parameters examined during sustained vowel production and reading included phonatory breaks, aperiodicity, and frequency shifts. Intra- and intermeasurer correlations showed high reliability for the measures. Findings indicated that those with ADSD produced a greater frequency of aberrant acoustic events than the controls during both tasks. For the group with ADSD, the amount and type of each event also varied with utterance type. The sustained vowel sample produced by those with ADSD consisted of a greater percentage of aperiodic segments followed by phonatory breaks and frequency shifts. During reading, frequency shifts were the predominant acoustic event, followed by phonatory breaks and aperiodicity. The advantage of segmenting the acoustic waveform into these measures and the relevancy of examining intertask performances by those with ADSD is discussed.
在14名被诊断患有成人型失音障碍（ADSD）的女性中识别出声带发声事件，并与14名年龄匹配（±2岁）且无嗓音病理/功能障碍证据的女性的声带发声事件进行比较。在持续元音发声和阅读过程中检查的三个声学参数包括发声中断、非周期性和频率变化。测量者内部和测量者之间的相关性显示这些测量具有高度可靠性。研究结果表明，在两项任务中，患有ADSD的人比对照组产生异常声学事件的频率更高。对于患有ADSD的组，每个事件的数量和类型也随话语类型而变化。患有ADSD的人产生的持续元音样本中，非周期性片段、发声中断和频率变化的百分比更高。在阅读过程中，频率变化是主要的声学事件，其次是发声中断和非周期性。本文讨论了将声学波形分割为这些测量的优势以及患有ADSD的人检查任务间表现的相关性。
