【摘要】 ＭＰ３播放器分为软解压与硬解压２种，软解压是利用计算机软件对ＭＰ３文件进行解压处理，需占用大量的ＣＰＵ时间。本文介绍了一种基于硬件解码技术的ＭＰ３播放器，并较详细的论述了播放器的硬件解码技术和数模转换等控制技术，并在此基础上，提出了ＨＩ９９Ａ－　ＭＰ３播放器的系统构成以及软硬件的设计与实现的方法。更多还原

【Abstract】 There are two kind of MP3 decode，one is software and another is hardware.The first one use computer software to decode MP3 file. It cost lots of CPU time. This paper introduces a kind of MP3 player based on hardware decode and D/A converting technology, then makes an detail description of the structure and principal of HI99-MP3 Player, at last proposes a kind of facility hardware controlled circuit and software design method.更多还原