G.723.1语音编码器算法的聚类优化策略及其应用

摘要

在实现G.723.1编码器算法的基础上，提出了一种针对码本搜索的聚类优化策略。利用聚类分析的结果，对原始码本进行了分组及重构等处理，从而实现了快速搜索。测试及系统的实际运行情况表明，在使算法复杂度下降约1.46MIPS的条件下，优化结果仍能保证解码端的音质无明显下降。%A clustering optimization strategy of codebook searching is putforward in this paper based on the realization of G.723.1 coder algorithm.The result of clustering analysis is used to group and rearrange the original codebook so that a fast searching can be realized.The testing and actual executing on G.723.1 coder show that its speech quality has little degradation under the condition that the algorithmic complexity is reduced by 1.46MIPS after the optimization.