G.729A闭环基音搜索算法的优化与实现  

Optimization and Realization of G.729A Algorithm for Closed-loop Pitch Search

作　　者：章丽[1] 张江鑫[1] 

机构地区：[1]浙江工业大学省通信网技术应用研究重点实验室

出　　处：《杭州电子科技大学学报（自然科学版）》2013年第5期98-101,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：浙江省重点科技创新团队资助项目(R50011)

摘　　要：在G.729A运算模块中,闭环基音搜索占据了较大的运算量,该文在分析了算法结构后,改进了自适应码本搜索模型。最后,将优化后的G.729A封装成静态库,加载到iPhone语音通话软件中进行测试。结果显示,该文采用的方法降低了闭环基音搜索的复杂度,改善了编码处理时间。As the closed-loop pitch search in the G. 729A computing module occupied a relatively large amount of computation, this paper analyzed its algorithm, and improved the model of adaptive codebook search. Finally, G. 729A was packaged into a static library, and then loaded into the iPhone.voice software for testing. The results show that the proposed method did reduce the complexity of open-loop search and improve the coding time.

关 键 词：闭环基音搜索 优化 语音通话软件 

分 类 号：TN912.3[电子电信—通信与信息系统]