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本文介绍从语音的有限个共振峰估计声道面积函数模型参数的扰动实现方法．在Ｓｃｈｒｏｅｄｅｒ的声管喇叭方程的扰动解法基础上，采用改进的声道面积函数模型；针对不同共振模式之间的交叉影响，采用了交叉敏感扰动矩阵关系式，及交叉扰动敏感矩阵的测试方法．设计了用递归式扰动法实现声道面积参数估计的算法．利用“共振峰─扰动”映射码书作为语音共振峰匹配最佳的初始面积扰动矢量，井用多级扰动目标和自适应增量控制，可有效地实现从有限个语音目标共振峰逆向估计声道面积函数．
This paper presents a method to estimate the perturbation of parameters of the channel area function from the finite formant of speech. Based on Schroeder’s perturbation solution of the acoustic horn equation, an improved channel area function model is adopted. For the crossover effect between different resonance modes, the cross-sensitive perturbation matrix equation and the test method of the cross-disturbance sensitive matrix are adopted. The recursive perturbation method is used to estimate the channel area parameters. Using the “formant-perturbation” mapping codebook as the optimal initial area disturbance vector for the formant of the voice formant matching, the multi-level perturbation target and the adaptive incremental control can be effectively used to realize the inverse estimation from the finite number of voice target formant estimation Road area function.