Terken J
Institute for Perception Research/IPO, Eindhoven, The Netherlands.
J Acoust Soc Am. 1991 Apr;89(4 Pt 1):1768-76. doi: 10.1121/1.401019.
Perceived prominence differences between accented words have been accounted for in terms of fundamental frequency (F0) variations. In one theory prominence is related to the relative magnitude of F0 changes, and in another theory prominence is related to relative frequencies of F0 maxima. Two experiments with the same group of subjects contrasted the two theories. The experiments used reiterant speech consisting of "maMAmamamaMAma" utterances with synthesized F0 contours, with F0 maxima on the second and penultimate syllables (P1 and P2, respectively). In one experiment the utterances had no baseline declination, and in the other experiment the slope of the baseline was varied. In both experiments, subjects performed an adjustment task under two different instructions: They were instructed to adjust P2 so that it had the same pitch or prominence as P1. The results show that both variables (instruction and presence or absence of baseline declination) affect the adjustments of P2. It is concluded that neither theory gives a satisfactory account of the results, and that perceived prominence is related in a complex way to the range of F0 values employed.
带口音单词之间可感知的突出差异已根据基频（F0）变化来解释。在一种理论中，突出与F0变化的相对幅度有关，而在另一种理论中，突出与F0最大值的相对频率有关。针对同一组受试者进行的两项实验对这两种理论进行了对比。实验使用了由“maMAmamamaMAma”话语组成的重复语音，并带有合成的F0轮廓，F0最大值分别出现在第二个和倒数第二个音节上（分别为P1和P2）。在一项实验中，话语没有基线下降，而在另一项实验中，基线的斜率有所变化。在两项实验中，受试者都在两种不同的指令下执行调整任务：他们被要求调整P2，使其音高或突出程度与P1相同。结果表明，两个变量（指令以及基线下降的有无）都会影响P2的调整。研究得出结论，两种理论都不能令人满意地解释这些结果，并且可感知的突出与所采用的F0值范围以复杂的方式相关。
