基于MIPS平台的MPEG-4 AACplus v2解码器的实现  

Implementation of MPEG-4 AACplus v2 Decoder Based on MIPS

作　　者：张磊[1] 王伟[1] 

机构地区：[1]上海交通大学自动化系,上海200240

出　　处：《电声技术》2007年第12期40-43,共4页Audio Engineering

摘　　要：介绍了MPEG-4 AACplus v2解码器的基本原理和MIPS平台HTK HSB1101的原理与应用,给出了MPEG-4 AACplus v2解码器在MIPS平台HTK HSB1101上的实现方案。在保证解码质量和实时解码要求的情况下,结合HTKHSB1101平台的特性,对解码器在软件代码和处理器方面进行了优化。实验结果表明,与标准算法相比,该解码器在确保音频解码质量的同时,提高了解码速度,满足了解码实时性要求,也为视频解码和其他应用提供了足够的处理空间。The basic principle of MPEG-4 AACplus v2 decoder and the implementation of HTK HSBll01 platform are discussed. The solution of MPEG-4 AACplus v2 decoder on HTK HSBll01 is presented, some parts of which are optimized with the particular features of HSBll01. Experimental results show that, compared with the original algorithm, the decoding speed is improved favorably, the quality of audio decoding is guaranteed, and much more free space are provided for the video decoding and other developments.

关 键 词：高级音频编码 音频解码器 频带重现 参量立体声 

分 类 号：TN912[电子电信—通信与信息系统]