洛阳理工学院毕业的设计模板.docVIP

基于51单片机的MP3播放器设计 摘 要 随着科学技术的发展，带数字语音功能的嵌入式终端类产品在日常生活中得到了广泛的应用，这也促进了与该功能相关的数字音频压缩技术的发展，在数字音频压缩技术中，MP3以其优异的性能得到了广泛的使用。 MP3对音频信号的编码方式比较特别，使用MP3格式存储的音频信号与其他格式相比，占用空间小的同时，还能够保证音频的质量，因此是目前最流行的音乐格式之一。MP3播放器也因此受到人们的喜爱MP3功能已成为嵌入式终端类产品的发展趋势之一。 本文介绍了一种基于51单片机的MP3播放器设计方案。它采用ATMEL公司专门针对MP3设计需求出品的AT89C51SND1C芯片, 文章详细论述了MP3播放器的硬件和软件结构设计流程，采用Protle99se软件画出原理图，制作印刷电路板，通过Keil编程软件设计中的文件解码程序，按键控制程序、USB通讯控制程序和FAT文件管理程序进行编程，通过电脑的串口和相应的软件进行调试，实现MP3实时解码过程。文章详细论述了播放器的软件和硬件结构设计，此播放器具有一定的使用价值。 关键词：单片机，MP3，AT89C51SND1C芯片，USB ,FAT MP3 Player Design Based on the 51 Microcomputer ABSTRACT Along with the development of science and technology, the embedded terminal products with digital audio function is widely used in our daily life, and the associated digital audio compression technologies are also highly developed, MP3 is the most popular one in various digital audio compression technologies according it’s excellent performance. MP3 encoding method for audio signal, especially the use of MP3 format storage compared with other format audio signals, take up the space is little, but also can ensure the quality of audio and therefore is at present the most popular music format one. MP3 players are so popular. Now with MP3 features embedded terminal products have become one of the trends of development. This paper introduce a MP3 player design based on 51microcontroller.It uses AT89C51SND1C chip,which ATMEL company produce for MP3 design requiresments.We detailed discuss the MP3 player hardware and software design process,use Protel99se software to draw MP3 schematic, make printed circuit boards, through Keil programming software design MP3 software,such as file decoding procedures, key control procedures, USB communication and control procedures,and FAT file management procedures and programming procedures, use the computers serial port and the corresponding software debug programs, realize real-time MP3 decoding. KEY WORDS: Microcontrololler，MP3，AT89C51SND1C chip， 目　录 前　言 1 第1章 ×××××× 2 1.1 ×××××