Previous studies have demonstrated the important effect of vowels on tone perception. The vowels qualities are mainly determined by formants. Existing studies were surveyed to investigate the effect of vowel formant distribution on tone perception. A continuum of vowel sounds from low to high vowels were investigated with stimuli based on three different tone continua to evaluate the tone identification. The results show that higher vowel formant distributions are more likely to be perceived as relatively low tones in the tone continuum. This effect varies with the tones with stronger effects on second and third tones. The tone perception effect is mainly reflected in the category boundary instead of the category width.
摘要 已有研究表明元音会影响声调感知。元音音色主要由共振峰决定, 因此, 该文在已有研究的基础上进一步考察不同共振峰分布下元音对声调感知的影响。合成1个从低元音到高元音的元音连续统, 连续统中的每一个刺激承载3个不同的声调连续统进行感知听辨实验。实验结果表明： 1) 随着元音连续统内刺激的共振峰分布逐步从低元音靠近高元音, 该元音也越来越倾向感知成声调连续统中调值较低的声调; 2) 元音对声调感知的影响和声调有关, 其在阳平-上声连续统的感知中影响更大; 3) 元音对声调感知的影响主要体现在范畴边界, 而不是范畴宽度。