摘要
本文主要对１．２～４．８Ｋｂ／ｓ的低速率语音编码体制进行研究，并构造了以ＭＢＥ为基础的，应用现代语音处理技术的编码体制。文章分析了目前两大语音编码方向——ＣＥＬＰ和ＭＢＥ各自的优缺点，讨论了ＭＢＥ的开放性，对语音参数编码，抗环境噪声，抗信道误码，误音激活检测（ＶＡＤ）等技术和ＭＢＥ的结合作了简略说明。文章还具体的给出了一种基于ＭＢＥ的语音编码体制的构造，分析了其参数提取的方法。
This paper discusses methods of low bit rate speech coding ranging from 1.2 to 4.8Kb/s , and constructs an algorithm based on MBE which takes the advantages of current advanced processing technique of speech signal. The advantages and disadvantages of two directions of speech coding——CELP and MBE are analyzed. The posibility of using advanced technique on MBE is presented, including speech parameters coding, background noise reduction, protection to channel transmission errors, voice activity detection, etc. [WT5”HZ〗
出处
《系统工程与电子技术》
EI
CSCD
1998年第11期18-21,共4页
Systems Engineering and Electronics
