浮点iLBC语音编码算法的定点DSP实现  

Implementation of iLBC Speech Coding Algorithm Based on Fixed-point DSP

作　　者：郑国宏[1] 陈亮[1] 程剑[2] 晋军[2] 

机构地区：[1]解放军理工大学通信工程学院电子信息工程系,江苏南京210007 [2]解放军理工大学通信工程学院卫星通信系

出　　处：《军事通信技术》2008年第3期21-25,共5页Journal of Military Communications Technology

摘　　要：简要介绍了iLBC语音编码算法的基本原理。详细描述了将iLBC浮点算法转换为定点算法并移植到定点DSP上的方法。比较了转换后的iLBC定点算法与ITU-T G.729A,G.723.1的复杂度,给出了转换后的定点算法与浮点算法的PESQ得分情况。The principle of iLBC speech coding algorithm was briefly introduced.The method to convert iLBC float point algorithm into fixed-point algorithm and to migrate the iLBC fixed-point algorithm to fixed-point DSP was described in detail.Finally,the complexity of iLBC fixed-point algorithm was compared with ITU-T G.729A,G.723.1 and the PESQ score of iLBC fixed-point algorithm and float point algorithm was presented.

关 键 词：语音编码 定点算法 浮点算法 

分 类 号：TN91[电子电信—通信与信息系统]