On the effectiveness of whole spectral shape for vowel perception
On the effectiveness of whole spectral shape for vowel perception
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DOI：
10.1121/1.1384908
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发表时间：
2001-08-01
影响因子：
2.4
通讯作者：
Yano, M
中科院分区：
文献类型：
--
作者：
Ito, M;Tsuchida, J;Yano, M
元音感知的共振峰假设被广泛接受，其中最低的两个或三个共振峰频率是元音质量感知的重要线索。然而，存在一些争议，表明共振峰频率是不够的，整个频谱形状对于感知是必要的。为了研究这个问题，进行了三个心理物理学实验。在第一个实验中，刺激的第一或第二共振峰被尽可能地抑制，同时仍保持原始频谱形状。对这些刺激的反应与未抑制的对照没有根本不同。在第二个实验中，使用了 F2 抑制刺激，其高频分量与低频分量的幅度比被系统地改变。结果表明，比率的变化会影响感知元音的质量，尤其是发音的位置。在第三个实验中，使用了全共振峰刺激，其振幅比与原始刺激不同，并且其F2保持恒定。结果表明，作为发音部位的提示，振幅比等于或比 F2 更有效。我们得出的结论是，共振峰频率并不是唯一的线索，整个频谱形状对于元音感知至关重要。 (C) 2001 年美国声学学会。
The formant hypothesis of vowel perception, where the lowest two or three formant frequencies are essential cues for vowel quality perception, is widely accepted. There has, however, been some controversy suggesting that formant frequencies are not sufficient and that the whole spectral shape is necessary for perception. Three psychophysical experiments were performed to study this question. In the first experiment, the first or second formant peak of stimuli was suppressed as much as possible while still maintaining the original spectral shape. The responses to these stimuli were not radically different from the ones for the unsuppressed control. In the second experiment, F2-suppressed stimuli, whose amplitude ratios of high- to low-frequency components were systemically changed, were used. The results indicate that the ratio changes can affect perceived vowel quality, especially its place of articulation. In the third experiment, the full-formant stimuli, whose amplitude ratios were changed from the original and whose F2's were kept constant, were used. The results suggest that the amplitude ratio is equal to or more effective than F2 as a cue for place of articulation. We conclude that formant frequencies are not exclusive cues and that the whole spectral shape can be crucial for vowel perception. (C) 2001 Acoustical Society of America.