无损音频中正交变换技术的算法研究  

Research on Lossless Audio Compression Algorithm Based on Orthogonal Transform

作　　者：王原丽[1] 刘建伟[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《计算机与现代化》2008年第2期12-14,共3页Computer and Modernization

摘　　要：介绍了基于正交变换的无损音频编码的技术框架,并对其关键技术即分帧、整数变换和熵编码作了深入的分析和研究,同时实现了音频信号的编解码。最后将其在性能上与其它预测方案进行比较,结果表明其在压缩比上存在优势。Whole coding scheme of Iossless audio compression based on orthogonal transform is presented, and the key technologies such as framing, integer transform and entropy coding are introduced in detail. Experimental results show that the transform based on scheme provides lower bit rates than those of linear prediction based schemes.

关 键 词：无损音频压缩 整数变换 整数改进离散余弦变换 熵编码 

分 类 号：TN912[电子电信—通信与信息系统]