A prominent pitch accent is known to trigger immediate contrastive interpretation of the accented referential expression. Previous experimental demonstrations of this effect, where [L+H* unaccented] contours led to an increase in earlier responses than [H* !H*] contours in contrastive context, may have benefited from the use of laboratory speech with stylized, homogenous pitch contours as well as data collected from a uniform participant group—college students. The present study tested visitors to a science museum, who better represent the general public, comparing lab and spontaneous speech to replicate the contrast-evoking effect of prominent pitch accent. Across two eye-tracking experiments where participants followed spoken instructions to decorate Christmas trees, spontaneous two-word [L+H* unaccented] contours led to faster eye-movements to contrastive ornament sets than [H* !H*] contours with no delay as compared to lab speech. The differences in the fixation functions were overall smaller than those in a previous study that used clear lab speech in richer contexts. Detailed acoustic analyses indicated that the lab speech tune types were distinguishable by any of several independent F0 measures on the adjective and by F0 slope. In contrast, no single phonetic measure on the spontaneous speech adjective distinguished between tune types, which were best classified according to independent noun-based measures. However, a non-linear combination of the adjective measures was shown to be equal to the noun measures in distinguishing between the [H* !H*] and [L+H* unaccented] tunes. The eye-movement data suggest that naive listeners were comparably sensitive to both lab and spontaneous prosodic cues on the adjective and made anticipatory eye-movements accordingly.

中文翻译：

---

对比异音调：实验室和自发的演讲导致博物馆参观者的同等注视反应

众所周知，突出的音高重音会立即触发对重音参考表达的对比解释。这种效果的先前实验证明，其中 [L+H* 无重音] 轮廓导致在对比上下文中比 [H* !H*] 轮廓更早的反应增加，可能受益于使用具有风格化、同质音调的实验室语音轮廓以及从统一的参与者组（大学生）收集的数据。本研究对科学博物馆的参观者进行了测试，他们更能代表公众，比较实验室和自发的演讲，以复制突出音高口音的对比诱发效果。在两次眼球追踪实验中，参与者按照语音指令装饰圣诞树，与实验室语音相比，自发的两字 [L+H* 无重音] 轮廓比 [H* !H*] 轮廓使对比装饰集的眼球运动更快，而且没有延迟。与先前在更丰富的上下文中使用清晰的实验室语音的研究相比，注视功能的差异总体上要小。详细的声学分析表明，实验室语音曲调类型可以通过形容词的几个独立 F0 测量中的任何一个和 F0 斜率来区分。相比之下，对自发语音形容词的单一语音测量没有区分音调类型，最好根据独立的基于名词的测量进行分类。然而，在区分 [H* !H*] 和 [L+H* unaccented] 曲调方面，形容词度量的非线性组合与名词度量相等。