基于瑞利混合隐马尔科夫模型的语音幅度谱分布估计  

Probability distribution estimation of speech amplitude spectrum based on Rayleigh mixture hidden Markov model

作　　者：王海艳[1] 赵晓晖[1] 顾海军[1] 

机构地区：[1]吉林大学通信工程学院信息科学实验室,长春130012

出　　处：《吉林大学学报（工学版）》2012年第5期1327-1330,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：高等学校博士学科点专项科研基金项目(200801830037)

摘　　要：针对语音信号处理中语音短时幅度谱分布模型过于单一的问题,提出了一种基于隐马尔科夫模型的语音幅度谱分布估计算法。该算法利用瑞利混合模型作为语音幅度谱分布,采用隐马尔科夫模型将语音分成不同的状态,在每一状态中有一组瑞利混合模型参数与之相对应,通过把语音信号分成不同的状态对语音进行分类,为语音短时谱幅度建立更为准确的模型。To solve the problem of oversimplified speech short-time spectral amplitude distribution model in speech signal processing,an estimation method of speech amplitude spectrum based on hidden Markov model is proposed.This estimation method uses Rayleigh mixture model as speech amplitude spectrum distribution and employs hidden Markov model to divide speech signal into different states.In each state,there is accordingly a group of Rayleigh mixture model parameters.By the division of speech signal into different states,this method can achieve speech classification and build more accurate model for speech signal short term spectrum.

关 键 词：语音信号处理 瑞利混合模型 隐马尔科夫模型 

分 类 号：TN912.3[电子电信—通信与信息系统]