Acoustic-phonetic correlates of talker intelligibility for adults and children
Acoustic-phonetic correlates of talker intelligibility for adults and children
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DOI：
10.1121/1.1806826
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发表时间：
2004-11-01
影响因子：
2.4
通讯作者：
Markham, D
中科院分区：
文献类型：
--
作者：
Hazan, V;Markham, D
本研究探讨了成人和儿童说话者可懂度的声学-语音相关性，以及不同说话者的相对可懂度是否取决于听者特征。在实验1中，测量了45名说话者（18名女性，15名男性，6名男孩，6名女孩）的单词可懂度。材料包括124个单词熟悉的7岁的孩子，充分涵盖了所有频繁的辅音混淆，刺激135成人和儿童听众在低水平的背景噪音。7 - 8岁的孩子比12岁的孩子或成年人犯的错误要多得多，但不同群体的个体说话者的相对可理解性是高度一致的。在实验2中，获得了一些声音尺寸的成年人说话者在实验I中确定为具有最高和最低的可懂度的听众评级。可懂度-与反映清晰度、声音动态和总体质量的主观维度显著相关。最后，在实验三中，测量基频，长期平均频谱，词的持续时间，辅音-元音强度比，元音空间大小获得所有说话者。总体而言，字的可懂度显着相关的总能量在1- 3 kHz的区域和字的持续时间，这些措施预测61%的可懂度的变化。事实上，个别说话者的相对可懂度是非常一致的听众年龄组表明，说话者的话语的声学语音特征是在确定说话者可懂度的主要因素。虽然识别了可懂度的一些声学语音相关性，但“最佳”谈话者的简档的可变性表明可以通过不同声学语音特征的组合来实现高可懂度。(C)2004年，美国声学学会。
This study investigated acoustic -phonetic correlates of intelligibility for adult and child talkers, and whether the relative intelligibility of different talkers was dependent on listener characteristics. In experiment 1, word intelligibility was measured for 45 talkers (18 women, 15 men, 6 boys, 6 girls) from a homogeneous accent group. The material consisted of 124 words familiar to 7-year-olds that adequately covered all frequent consonant confusions; stimuli were presented to 135 adult and child listeners in low-level background noise. Seven-to-eight-year-old listeners made significantly more errors than 12-year-olds or adults, but the relative intelligibility of individual talkers was highly consistent across groups. In experiment 2, listener ratings on a number of voice dimensions were obtained for the adults talkers identified in experiment I as having the highest and lowest intelligibility. Intelligibility -was significantly correlated with subjective dimensions reflecting articulation, voice dynamics, and general quality. Finally, in experiment 3, measures of fundamental frequency, long-term average spectrum, word duration, consonant-vowel intensity ratio, and vowel space size were obtained for all talkers. Overall, word intelligibility was significantly correlated with the total energy in the 1- to 3-kHz region and word duration; these measures predicted 61% of the variability in intelligibility. The fact that the relative intelligibility of individual talkers was remarkably consistent across listener age groups suggests that the acoustic-phonetic characteristics of a talker's utterance are the primary factor in determining talker intelligibility. Although some acoustic-phonetic correlates of intelligibility were identified, variability in the profiles of the "best" talkers suggests that high intelligibility can be achieved through a combination of different acoustic -phonetic characteristics. (C) 2004 Acoustical Society of America.