Taitelbaum-Swead Riki, Hildesheimer Minka, Kishon-Rabin Liat
Department of Communication Disorders, Sackler Faculty of Medicine, Tel Aviv University, Israel.
J Basic Clin Physiol Pharmacol. 2003;14(2):165-76. doi: 10.1515/jbcpp.2003.14.2.165.
Very few studies investigated systematically the acoustic cues for the perception of voicing stops in Hebrew. Voicing is characterized by several parameters of which the voice onset time (VOT) was found to be the primary cue for its perception. There are, however, other known acoustic cues to voicing such as transition to the first formant (F1) and the initial burst. The purpose of the present study was to measure the relative weighting of these various acoustic cues in the perception of Hebrew voicing, using the conflicting cues paradigm. Thirteen adults with normal hearing participated in this study. Stimuli consisted of one pair of meaningful words that differ in the voicing of the initial stop. Four different continua were constructed from the pair of natural stimuli. The first two consisted of the voiced burst combined with the vowel that was truncated from the consonant-vowel combination (where the consonant was voiced or voiceless). The remaining two continua consisted of the voiceless burst combined with the same truncated vowels. For each stimulus, a VOT continuum was created varying from -40 to +40 ms in 10 ms segments. Subjects were tested using a two alternative forced choice labeling procedure. The percent of responses to each stimulus of each VOT continuum (/b-p/) was calculated for each individual and combination. The results show that each acoustic cue contributed to the perception of initial voicing in Hebrew: (1) When the stimulus was constructed from the voiced cues, positive VOT values were needed for the voice/voiceless distinction; (2) when the stimulus was constructed from the voiceless cues, negative VOT values were needed for the voicing distinction; and (3) when the stimulus was constructed from voiced and voiceless cues, intermediate VOT values were needed for the voicing distinction. These results provide initial information regarding the relative effect of the acoustic cues in the perception of Hebrew stop voicing.
极少有研究系统地探究希伯来语中浊音塞音感知的声学线索。浊音由几个参数来表征，其中语音起始时间（VOT）被发现是其感知的主要线索。然而，还有其他已知的浊音声学线索，比如向第一共振峰（F1）的过渡以及初始爆破音。本研究的目的是使用冲突线索范式来测量这些不同声学线索在希伯来语浊音感知中的相对权重。13名听力正常的成年人参与了这项研究。刺激材料由一对在初始塞音浊音方面不同的有意义单词组成。从这对自然刺激材料构建了四个不同的连续体。前两个由浊音爆破音与从辅音 - 元音组合中截断的元音相结合组成（其中辅音为浊音或清音）。其余两个连续体由清音爆破音与相同的截断元音相结合组成。对于每个刺激，创建了一个VOT连续体，范围从 -40到 +40毫秒，以10毫秒为间隔。使用二选一的强制选择标记程序对受试者进行测试。计算每个个体和每种组合对每个VOT连续体（/b - p/）的每个刺激的反应百分比。结果表明，每个声学线索都有助于希伯来语初始浊音的感知：（1）当刺激材料由浊音线索构建时，语音/清音区分需要正的VOT值；（2）当刺激材料由清音线索构建时，浊音区分需要负的VOT值；（3）当刺激材料由浊音和清音线索构建时，浊音区分需要中间的VOT值。这些结果提供了关于声学线索在希伯来语塞音浊音感知中的相对作用的初步信息。
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