Ning Li-Hsin
Department of English, National Taiwan Normal University, 162 Heping East Road, Daan District, Taipei City 106, Taiwan.
J Acoust Soc Am. 2022 Apr;151(4):2530. doi: 10.1121/10.0010237.
The purpose of this study was to explore vocal responses to pitch perturbation on the flat, rising, and falling contour made of sequences of level tones in Taiwanese Southern Min. Twenty-two native speakers produced nine disyllabic words (flat: high-high, mid-mid, and low-low tone sequences; rising: mid-high, low-high, and low-mid tone sequences; falling: high-mid, high-low, and mid-low tone sequences). Pitch-shift stimuli (200 ms) appeared at either 100 ms (the beginning of the first syllable) or 400 ms (the beginning of the second syllable) after vocal onset. The participants were asked to ignore the pitch perturbation that appeared via auditory feedback. We found their compensation decreased when both syllables had identical level tones (i.e., the flat contour) but was particularly large when the overall contour was falling. Furthermore, pitch compensation at 100 ms was smaller than at 400 ms for the falling contour, but not for the flat and rising contours. Our results suggest that less susceptibility to pitch perturbation in the initial speech planning process is conditioned by the velocity of overall pitch contour.
本研究旨在探究台湾闽南语中，对由平调、升调及降调序列构成的音高扰动的语音反应。22名母语者产出了9个双音节词（平调：高高、中中、低低声调序列；升调：中高、低高、低中声调序列；降调：高低、高低、中低声调序列）。音高偏移刺激（200毫秒）在发声开始后100毫秒（第一个音节开始时）或400毫秒（第二个音节开始时）出现。要求参与者忽略通过听觉反馈出现的音高扰动。我们发现，当两个音节具有相同的平调（即平调轮廓）时，他们的补偿会减少，但当整体轮廓为降调时，补偿特别大。此外，对于降调轮廓，100毫秒时的音高补偿小于400毫秒时的，但对于平调和升调轮廓则不然。我们的结果表明，在初始语音规划过程中对音高扰动的较低敏感性受整体音高轮廓速度的制约。
