Acoustic-phonetic characteristics of speech produced with communicative intent to counter adverse listening conditions
Acoustic-phonetic characteristics of speech produced with communicative intent to counter adverse listening conditions
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DOI：
10.1121/1.3623753
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发表时间：
2011-10-01
影响因子：
2.4
通讯作者：
Baker, Rachel
中科院分区：
文献类型：
--
作者：
Hazan, Valerie;Baker, Rachel
本研究探讨了在自发的互动中产生的语音是否不同的讲话时，正在经历实际的挑战性条件下的讲话者产生的语音（a）在更理想的条件下的交际意图和（B）没有交际意图在想象的挑战性条件下（阅读，清晰的语音）的声学语音特征。它还调查了是否声学语音的修改，以抵消一个具有挑战性的听力条件的影响是量身定制的条件下，通信发生。40名谈话者在良好和具有挑战性的条件下进行“发现差异”的图片任务时被成对记录。在具有挑战性的条件下，一个说话者听到另一个说话者（1）通过三通道噪声声码器（VOC）;（2）同时存在串音噪声（BABBLE）。阅读，清晰的语音表现出更极端的变化，中位数F0，F0范围，和说话的速度比语音产生对抗的影响，一个具有挑战性的听力条件。在VOC条件下，F0和强度增强不太可能帮助可懂度，说话者没有改变他们的F0中位数和范围;平均能量和元音F1增加小于在BABBLE条件。这表明言语产生是以谈话者为中心的，谈话者根据对话者的需要调整他们的言语，即使没有直接经历具有挑战性的听力条件。(C)2011年美国声学学会。[DOI 10.1121/1.3623753]
This study investigated whether speech produced in spontaneous interactions when addressing a talker experiencing actual challenging conditions differs in acoustic-phonetic characteristics from speech produced (a) with communicative intent under more ideal conditions and (b) without communicative intent under imaginary challenging conditions (read, clear speech). It also investigated whether acoustic-phonetic modifications made to counteract the effects of a challenging listening condition are tailored to the condition under which communication occurs. Forty talkers were recorded in pairs while engaged in "spot the difference" picture tasks in good and challenging conditions. In the challenging conditions, one talker heard the other (1) via a three-channel noise vocoder (VOC); (2) with simultaneous babble noise (BABBLE). Read, clear speech showed more extreme changes in median F0, F0 range, and speaking rate than speech produced to counter the effects of a challenging listening condition. In the VOC condition, where F0 and intensity enhancements are unlikely to aid intelligibility, talkers did not change their F0 median and range; mean energy and vowel F1 increased less than in the BABBLE condition. This suggests that speech production is listener-focused, and that talkers modulate their speech according to their interlocutors' needs, even when not directly experiencing the challenging listening condition. (C) 2011 Acoustical Society of America. [DOI: 10.1121/1.3623753]