| 基于改进谱减法的语音增强研究 |
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| 引用本文： | 刘志坤,唐小明,朱洪伟.基于改进谱减法的语音增强研究[J].计算机仿真,2009,26(6):363-366. |
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| 作者姓名： | 刘志坤 唐小明 朱洪伟 |
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| 作者单位： | 海军航空工程学院电子信息工程系,山东,烟台,264001 |
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| 摘 要： | 语音增强技术是语音信号处理中的重要课题之一,谱减法是目前语音增强处理中常用的方法.针对传统谱减法残余音乐噪声过强,清音部分损失严莺的缺点,引入了一种利用语音信号的短时平均幅度差特征并结合短时平均幅度的语音检测算法,对传统的谱减法进行了改进.根据采集的真实航空噪声数据,将传统谱减法和改进的谱减法结果进行了比较分析.仿真结果表明,改进形式的谱减法可以有效降低音乐噪声,提高信噪比和町懂度,可以满足语音增强的要求.
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| 关 键 词： | 谱减法 语音增强 端点检测 可懂度 |
Speech Enhancement Based on Modified Spectral Subtraction Method |
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| LIU Zhi-kun,TANG Xiao-ruing,ZHU Hong-wei.Speech Enhancement Based on Modified Spectral Subtraction Method[J].Computer Simulation,2009,26(6):363-366. |
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| Authors: | LIU Zhi-kun TANG Xiao-ruing ZHU Hong-wei |
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| Affiliation: | Department of Electronic and Information Engineering;Naval Aeronautical University;Yantai Shandong 264001;China |
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| Abstract: | The speech enhancement technique is an important topic in speech signal processing.At present,spectral subtraction method is an useful algorithm for speech enhancement.Aiming at reducing musical noise and the loss of unvoiced speech in the spectral subtraction method,a reliable voice active detection algorithm which utilizes the characteristics of short-time AMDF(Average Magnitude Difference Function)and short-time AM(Average Magnitude)to detect the speech endpoint is introduced.And the spectral subtraction... |
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| Keywords: | Spectral subtraction method Speech enhancement Endpoint detection Intelligibility |
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