基于CMP算法的正弦波模型研究  

Research of CMP-Based Sinusoid Modeling

作　　者：周宏[1] 潘亚涛[1] 陈健[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《数据采集与处理》2001年第4期412-416,共5页Journal of Data Acquisition and Processing

摘　　要：MP3,AAC等高质量音频编码方法已经成为国际标准 ,目前研究的热点已转向更高效率更低比特率的编码算法。正弦波模型作为其中的一种解决方法 ,正引起越来越多的重视。本文提出一种新的 CMP(Consistentmatching pursuit)算法来处理正弦波模型。它在分析时将合成过程考虑在内 ,保证了分析与合成时的一致性 ;同时又利用了 MP算法固有的高度冗余性 ;而且还采取了一些措施有效地降低了分析过程的计算量。因而和经典的迭代法相比 ,可以以较少的计算量获得更好的性能。High quality audio coding methods, such as MP3 and AAC, have already become international standards; currently the research is focused on algorithms for low bit rate applications. This paper introduces a new algorithm called CMP (consistent matching pursuit) to solve the sinusoid modeling, which is gaining more and more interests. The CMP algorithm considers synthesis during analysis and keeps their consistency. At the same time, it utilizes the high redundancy of the MP algorithm and takes some measures to effectively reduce the amount of computation. It can achieve higher performance than that of classical iterative solutions with less computation. Moreover, it is suitable for many kinds of compressed domain processing.

关 键 词：正弦波模型 音频编码 信号处理 CMP算法 

分 类 号：TN912.3[电子电信—通信与信息系统]