【作者】 章丽； 张江鑫；

【Author】 ZHANG Li,ZHANG Jiang-xin (Zhejiang Provincial Key Laboratory of Communication Networks and Applications, Zhejiang University of Technology,Hangzhou Zhejiang 310023,China)

【机构】 浙江工业大学省通信网技术应用研究重点实验室；

【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。更多还原

【Abstract】 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.更多还原