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本文在传统发音唇动分析模型的基础上,构建一个发音唇动时空模型.提出了唇动时域特征、空域特性与语音的相关度度量方法,以及融合时空度量的语音唇动一致性检测方法.利用唇宽、唇高与音频幅度变化之间的联系获得语音唇动的时域一致性评分;通过协惯量分析法获得语音与唇部空域特征的初始相关度,并提出了针对语音、唇动自然延时的相关度修订方法;最后将时空上的得分进行融合以判断语音唇动是否一致.初步实验结果表明,对于四种不一致音视频数据,与常用的协惯量方法相比,EER(Equal Error Rate)平均下降了约8.2%. 相似文献
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Let S be a nonempty, proper subset of all possible refined inertias of real matrices of order n. The set S is a critical set of refined inertias for irreducible sign patterns of order n,if for each n × n irreducible sign pattern A, the condition S ? ri(A) is sufficient for A to be refined inertially arbitrary. If no proper subset of S is a critical set of refined inertias, then S is a minimal critical set of refined inertias for irreducible sign patterns of order n.All minimal critical sets of refined inertias for full sign patterns of order 3 have been identified in [Wei GAO, Zhongshan LI, Lihua ZHANG, The minimal critical sets of refined inertias for 3×3 full sign patterns, Linear Algebra Appl. 458(2014), 183–196]. In this paper, the minimal critical sets of refined inertias for irreducible sign patterns of order 3 are identified. 相似文献
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通过对惯量一阻尼一弹簧系统的动力学建模,利用PID方法对该系统的稳定性进行分析,可以看出,PID校正方法在控制系统的应用中,有着重要的意义。 相似文献
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In this Paper,the inertia of a symmetric Z-matrix is studied,and bounds of the number of its positive eigenvalues are obtained.Also the interlacing theorem for Schur complement of a symmetric Z-matrix is established,which can be considered as a generalization Cauchy interlacing theorem in some extent. 相似文献