Role of F0 and amplitude in the perception of intervocalic glottal stops.
Role of F0 and amplitude in the perception of intervocalic glottal stops.
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DOI：
10.1044/jshr.3906.1182
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发表时间：
1996-12
期刊：
影响因子：
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通讯作者：
J. Hillenbrand;R. Houde
中科院分区：
文献类型：
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作者：
J. Hillenbrand;R. Houde
出现在元音-辅音-元音语境中的声门塞音通常根本不被认为是塞音，而是显示出在整个声门收缩手势中连续的发声。以这种方式实现的声门发音明显地以振幅和基频的降低为标志。在本研究中，测量自然产生的话语包含序列/o？0/（即，分隔两个相同元音的声门塞音）被用来产生一组在它们的F0和振幅轮廓上变化的合成刺激。以六种方式重新合成话语：（a）原始音高/原始振幅，（B）原始音高/平坦振幅，（c）平坦音高/原始振幅，（d）平坦音高/平坦振幅，（e）平坦音高/反向振幅，以及（f）反向音高/平坦振幅。结果表明：（a）在振幅没有任何下降的情况下，音调轮廓的下降几乎总是足以提示声门塞音的存在，（b）振幅轮廓的下降通常足以提示声门塞音的存在，以及（B）轮廓倒置的信号没有被听到作为声门塞音，这表明发出声门塞音信号所需的不仅仅是突然的变化。
Glottal stops that occur in vowel-consonant-vowel context are often not realized as stops at all, but rather show voicing that is continuous throughout the glottal constriction gesture. Glottal articulations that are realized in this way are apparently marked by reductions in amplitude and fundamental frequency. In the present study measurements from naturally produced utterances containing the sequence /o?o/ (i.e., a glottal stop separating two identical vowels) were used to create a set of synthetic stimuli that varied in their F0 and amplitude contours. The utterances were resynthesized in six ways: (a) original pitch/original amplitude, (b) original pitch/flat amplitude, (c) flat pitch/original amplitude, (d) flat pitch/flat amplitude, (e) flat pitch/inverted amplitude, and (f) inverted pitch/flat amplitude. Results indicated that: (a) a dip in the pitch contour is nearly always sufficient to cue the presence of a glottal stop in the absence of any drop in amplitude, (b) a dip in the amplitude contour is usually sufficient to cue the presence of a glottal stop, and (c) signals with inverted contours were not heard as glottal stops, indicating that it is not merely an abrupt change that is needed to signal a glottal stop.