基于DSP处理器的MP3解码器的优化  

Optimization of MP3 audio decoder based on DSP processor

作　　者：吴全玉[1] 杨燕翔[1] 

机构地区：[1]西华大学电气信息学院,成都610039

出　　处：《信息技术》2005年第8期36-37,68,共3页Information Technology

摘　　要：音频格式MP3(第三层)是现在非常流行的一种数字音频压缩技术,适应于微小的移动设备,如MP3播放器和手机等。它们内置的解码器大多或者是基于DSP,或者是RISC处理器,虽然基于汇编语言的解码程序已经很成熟高效,但是不方便移植。文中提出的优化解码程序是基于标准C语言的,只要添加不同类型的DSP头文件,就可以移植应用。已经成功解出MP3(44.1kHz,128kbps),并且满足国际音频组要求的限制精度。Now the formation of MP3（the third layer）audio is a very popular digital audio compression technique, adapting to the small mobile equipments, such as MP3 player and mobile phone. Mostly their inside decoders are based on the DSP or RISC processor. Although the decoding program based on assembler language is already mature and efficient, but it is transplanted inconveniently. This paper puts forward the optimal program of decoder based on the standard C language, its application only needs adding different headers of DSP. The paper succeeded to decode MP3（44.1 kHz, 128 kbps）, that satisfied the limited accuracy cf the international audio standard.

关 键 词：MP3解码器 DSP处理器 优化 C程序 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]