语速对三合元音共振峰动态特征的影响

发布时间：2018-06-11 20:39

本文选题：三合元音 + 共振峰动态特征　；参考：《清华大学学报(自然科学版)》2017年09期

【摘要】：该文以30位18至28岁的男性被试为对象,在快速、中速和慢速3种语速条件下,对汉语普通话中4个三合元音(/iau/、/iou/、/uai/、/uei/)共振峰的动态特征进行了量化分析。运用三次多项式拟合方法描述前3条共振峰的动态轨迹,以拟合系数为自变量,对共振峰的动态特征进行了判别分析。结果表明:相同语速语音比对时,语速不同,判别能力也不同,快速发音的判别能力最高(平均为76.7%),中速和慢速发音的判别能力相对较低(分别为69.5%、70.3%)。不同语速语音组合比对时,各三合元音的判别能力均有所下降,其中"快+慢"组合的判别效果最差(平均为48.0%)。所有的语速条件下,判别能力最高的三合元音均为/iau/。由此可知,语速相同或相近时,三合元音的共振峰动态特征可以有效区分不同说话人。
[Abstract]:In this paper, 30 male subjects aged 18 to 28 were selected to quantitatively analyze the dynamic characteristics of the resonance peaks of the four trizygous vowels in Chinese Putonghua under the conditions of rapid, medium and slow speech rates, i.e., the / uai / ueir / r / u / v / r / ueir / r. The cubic polynomial fitting method is used to describe the dynamic trajectories of the first three resonance peaks. The dynamic characteristics of the resonance peaks are analyzed by using the fitting coefficients as independent variables. The results showed that when the speech speed was different at the same speed, the discriminant ability was also different. The discriminant ability of rapid pronunciation was the highest (average 76.7g), while that of medium and slow pronunciation was relatively low (69.5% 70.3%, respectively). In the comparison of different speech speeds, the discriminant ability of the three vowels decreased, among which the "fast and slow" combination had the worst discriminant effect (the average was 48.0%). Under all the speed conditions, the highest discriminant trimeric vowel was / iau / r. It can be concluded that the dynamic characteristics of the resonance peak of the three vowels can effectively distinguish the different speakers when the speech speed is the same or similar.
【作者单位】：司法文明协同创新中心;证据科学教育部重点实验室(中国政法大学);智能语音技术公安部重点实验室;北京市朝阳区监察委员会;公安部物证鉴定中心;
【基金】：智能语音技术公安部重点实验室开放课题项目(2014ISTKFKT1)
【分类号】：H017

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