摘要
在实现G 72 3 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 4 6MIPS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 put forward 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
出处
《通信学报》
EI
CSCD
北大核心
2001年第2期113-117,共5页
Journal on Communications
关键词
语音编码器
优化
聚类分析
G 723 1 speech coder
optimization
clustering analysis
