| 2．4kb／sLPC－10语音分析算法及其技术剖析 |
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| 引用本文： | 宋一凡,陈衍翊,张刚,杨斌. 2．4kb／sLPC－10语音分析算法及其技术剖析[J]. 太原理工大学学报, 1995, 0(4) |
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| 作者姓名： | 宋一凡 陈衍翊 张刚 杨斌 |
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| 作者单位： | 太原电力学校 |
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| 摘 要： | 本文设计了一个２．４ｋｂ／ｓ的语音分析算法，并详细介绍了算法中的技术细节。对语音的分析采用ＬＰＣ分析方法，以语音能量、基音周期以及１０个部分相关系数作为一帧语音的参数。在分析算法中采用杜宾递推公式求取部分相关系数，采用并联时域基音检测技术提取基音周期。通过删除语音间隙及进行自动增益控制等措施来提高语音参数的精确度，对语音参数进行编码以达到２．４ｋｂ／ｓ的传输率的要求。
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| 关 键 词： | 语音分析；基音检测；LPC算法；部分相关系数；语音间隙删除；自动增益控制 |
2.4kb/s Speech Andlysis Algorithm and Its Technological Analysis |
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| Song Yifan, Chen Yanyi, Zhang Gang. 2.4kb/s Speech Andlysis Algorithm and Its Technological Analysis[J]. Journal of Taiyuan University of Technology, 1995, 0(4) |
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| Authors: | Song Yifan Chen Yanyi Zhang Gang |
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| Affiliation: | Song Yifan; Chen Yanyi; Zhang Gang(Department of Electronic Information Engineering)Yang Bin(Taiyuan Electric school) |
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| Abstract: | In this paper,a LPC analysis algorithm is realized at 2. 4kb/s,andits technological analysis is especially described.LPC method is used to analysespeech parameters (energy,pitch and parlor coefficient).In analysis algorithm,Dur-bine Formula is used to get the parlor coefficient of speech,processing in the timedomain is used to estimate the pitch periods of speech.Measures of silence supression,automatic gain control are taken to increase the accuracy degree. Speech parameters are coded for 2.4kb/s. |
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| Keywords: | speech analysis pitch detecting LPC analysis algorithm parlorcoefficient silence supression automatic gain control |
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