【作者】 翟智博； 刘鹏； 张炜； 郑德春；

【Author】 ZHAI Zhibo,LIU Peng,ZHANG Wei ZHENG Dechun (Department of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027)

【机构】 浙江大学信息与电子工程学系；

【摘要】 本文针对基于16位定点DSP核的MP3解码算法研究及实现,提出了针对DSP芯片特点的软硬件优化设计方法,包括高级语言算法的结构优化和汇编语言的软硬件优化。在DSP验证平台上进行128Kbps,44.1KHz的立体声MP3解码,优化后运算量为46.6MIPS,程序空间为20.4Kbyte,优化率分别达到65.6%和49.6%。实验结果表明音频算法和DSP结构软硬件协同设计的重要性。更多还原

【Abstract】 This article elaborated the MP3 decoding algorithm research and the realization on 16-fixed-point DSP,proposed software and hardware co-optimization design methods,including higher language optimization and assembly language.Decoding 128Kbps、44.1KHz stereo MP3 on DSP verification platform,the optimization results needs 46.6MIPS and 20.4Kbyte memory space The optimization rate respectively achieves 65.6%and 49.6%.The experimental result indicates the importance of the audio algorithm and the hardware/software co-design depended on DSP structure.更多还原