DSP-based MP3 decoder algorithm optimization and implementation

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (23): 94-96.

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DSP-based MP3 decoder algorithm optimization and implementation

YE Xiao-zhou^1,2，DENG Feng²，ZENG Xue-wen²，WANG Jin-lin²

1.Graduate School of the Chinese Academy of Sciences，Beijing 100049，China
2.Institute of Acoustic，Chinese Academy of Sciences，Beijing 100083，China

Received:1900-01-01 Revised:1900-01-01 Online:2007-08-11 Published:2007-08-11
Contact: YE Xiao-zhou

基于定点DSP的MP3解码算法优化与实现

叶晓舟^1,2，邓峰²，曾学文²，王劲林²

1.中国科学院研究生院，北京 100049
2.中国科学院声学研究所，北京 100083

通讯作者: 叶晓舟

Abstract

Abstract: Design and implement MP3 decoder based on 16 bit fixed-point DSP-LSI403LP.Introduce the LSI403LP features，design the fixed algorithm conversion for MP3 decoder，study both the algorithm and the instruction optimization methods for major functions.Decoder needs 10.36 MIPS，which satisfies real-time playout with good output quality.

Key words: DSP, MP3 decoder, algorithm optimization

摘要： 设计和实现了基于16位定点数字信号处理器——LSI403LP的MP3解码算法。介绍了LSI403LP结构特点，设计了MP3解码算法定点化方案，研究了主要功能模块的算法与指令优化方法。实现解码复杂度为10.36 MIPS，满足实时播放要求，解码输出音质效果良好。

关键词: 数字信号处理器, MP3解码, 算法优化

YE Xiao-zhou^1,2，DENG Feng²，ZENG Xue-wen²，WANG Jin-lin². DSP-based MP3 decoder algorithm optimization and implementation[J]. Computer Engineering and Applications, 2007, 43(23): 94-96.

叶晓舟^1,2，邓峰²，曾学文²，王劲林². 基于定点DSP的MP3解码算法优化与实现[J]. 计算机工程与应用, 2007, 43(23): 94-96.

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DSP-based MP3 decoder algorithm optimization and implementation

基于定点DSP的MP3解码算法优化与实现

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