Culling J F, Darwin C J
University of Sussex, Brighton, England.
Percept Psychophys. 1993 Sep;54(3):303-9. doi: 10.3758/bf03205265.
When the fundamental frequency (F0) contours of two speakers' voices intersect, the listener is presented with a problem. The listener must decide which of the F0 contours emerging from the intersection is a continuation of which contour entering the intersection: have the F0 contours crossed or merely approached and parted? In the present experiment, subjects listened to two simultaneous diphthong-like sounds with F0 contours that either approached and diverged or crossed over. The task was to report whether the pitches "crossed" or "bounced" away from each other. Despite the changing timbres of the two sounds, the subjects were able to discriminate crossing and bouncing F0s, provided that the timbres of the vowels differed at the moment when their F0s were the same. When the timbres were the same, the subjects could not make the discrimination and tended to hear a bouncing percept. These results are consistent with the idea that listeners use continuity of timbre rather than continuity of F0 movement to disambiguate F0 intersections.
当两个说话者声音的基频（F0）轮廓相交时，听众会面临一个问题。听众必须判断从交点处出现的F0轮廓中，哪一个是进入交点的哪一个轮廓的延续：F0轮廓是交叉了还是仅仅靠近然后分开了？在本实验中，受试者聆听了两个同时发出的类似双元音的声音，其F0轮廓要么靠近然后发散，要么交叉。任务是报告音高是彼此“交叉”还是“反弹”分开。尽管两种声音的音色不断变化，但只要元音的音色在F0相同时刻不同，受试者就能区分交叉和反弹的F0。当音色相同时，受试者无法进行区分，并且倾向于听到反弹的感知。这些结果与以下观点一致，即听众使用音色的连续性而非F0运动的连续性来消除F0交点的歧义。
