Whitfield Jason A, Goberman Alexander M
a Department of Communication Sciences and Disorders , Bowling Green State University , Bowling Green , OH , USA.
Int J Speech Lang Pathol. 2017 Apr;19(2):184-194. doi: 10.1080/17549507.2016.1193897. Epub 2016 Jun 21.
The current investigation examined the relationship between perceptual ratings of speech clarity and acoustic measures of speech production. Included among the acoustic measures was the Articulatory-Acoustic Vowel Space (AAVS), which provides a measure of working formant space derived from continuously sampled formant trajectories in connected speech.
Acoustic measures of articulation and listener ratings of speech clarity were obtained from habitual and clear speech samples produced by 10 neurologically healthy adults. Perceptual ratings of speech clarity were obtained from visual-analogue scale ratings and acoustic measures included the AAVS measure, articulation rate and percentage pause.
Clear speech was characterised by a higher perceptual clarity rating, slower articulation rate, greater percentage pause and larger AAVS compared to habitual speech. Additionally, correlation analysis revealed a significant relationship between the perceptual clear speech effect and the relative clarity-related change in the AAVS and articulation rate measures.
The current findings suggest that, along with speech rate measures, the recently introduced AAVS is sensitive to changes in speech clarity.
当前研究考察了言语清晰度的感知评分与言语产生的声学指标之间的关系。声学指标中包括发音-声学元音空间（AAVS），它提供了一种从连贯言语中连续采样的共振峰轨迹得出的工作共振峰空间测量方法。
从10名神经健康的成年人产生的习惯性言语和清晰言语样本中获取发音的声学指标和听众对言语清晰度的评分。言语清晰度的感知评分通过视觉模拟量表评分获得，声学指标包括AAVS测量、发音速率和停顿百分比。
与习惯性言语相比，清晰言语的特点是感知清晰度评分更高、发音速率更慢、停顿百分比更大以及AAVS更大。此外，相关分析揭示了感知清晰言语效应与AAVS和发音速率测量中与清晰度相关的相对变化之间存在显著关系。
当前研究结果表明，与言语速率测量一样，最近引入的AAVS对言语清晰度的变化很敏感。
