口音检测是一个棘手的问题：基频变化的方向和速率会影响听众的理解。
Accent detection is a slippery slope: Direction and rate of F0 change drives listeners' comprehension.
作者信息
Isaacs Angela M, Watson Duane G
机构信息
Department of Psychology, University of Illinois at Urbana-Champaign.
出版信息
Lang Cogn Process. 2010 Jan 1;25(7-9):1178-1200. doi: 10.1080/01690961003783699.
The present study tests whether listeners use F0, duration, or some combination of the two to identify the presence of an accented word in a short discourse. Participants' eye movements to previously mentioned and new objects were monitored as participants listened to instructions to move objects in a display. The name of the target object on critical trials was resynthesized from naturally-produced utterances so that it had either high or low F0 and either long or short duration. Fixations to the new object were highest when there was a steep rise in F0. Fixations to the previously mentioned object were highest when there was a steep drop in F0. These results suggest that listeners use F0 slope to make decisions about the presence of an accent, and that F0 and duration by themselves do not solely determine accent interpretation.
本研究测试了听众是使用基频（F0）、时长还是两者的某种组合来识别短文中重音词的存在。在参与者听取移动显示屏中物体的指令时，监测他们对先前提到的物体和新物体的眼动情况。关键试验中目标物体的名称是从自然产生的话语中重新合成的，这样它就具有高或低的基频以及长或短的时长。当基频急剧上升时，对新物体的注视次数最多。当基频急剧下降时，对先前提到的物体的注视次数最多。这些结果表明，听众使用基频斜率来判断重音的存在，而且基频和时长本身并不能单独决定重音的解读。
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