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应用线性予测倒频谱系数的发言人核实技术

A Speaker Verification Technique with Linear Prediction Cepstrum

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【摘要】 以线性子测倒频谱系数作为语音特征参数的发音人核实技术。在计算输入样品与参考样品之间的距离时采用了加权函数。为减小发音的离散性的影响,采用动态匹配平均法所产生的优化参考样本。决策中采用二单词平均核实的技术,提高了核实精度及系统的可靠性。文中还介绍所用的产生核实用阚值的计算方法。所介绍的技术达到了平均精度99.5%,实验证明工作是可靠的,软件包是可用的。

【Abstract】 A speaker verification technique which takes the linear prediction Cepstrum to be the parameter of phonetic characteristics is introduced in this paper. In this technique the weighting function is used when the distance between the input template and the reference template is calculated. In order to reduce the effect on the divergency of pronounciation the reference template optimized by DP matchingaveraging is adopted. In decision the technique of average distance from two fixed words is also used so as to raise the verification accuracy (99.5%) and the reliability of the system.In addition, a statistical algorithm for producing a threshold which will be used in verification is also introduced.

  • 【文献出处】 哈尔滨工业大学学报 ,Journal of Harbin Institute of Technology , 编辑部邮箱 ,1985年04期
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