【正文】
洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) I 基于 51 單片機(jī)的 MP3 播放器設(shè)計(jì) 摘 要 隨著科學(xué)技術(shù)的發(fā)展,帶數(shù)字語音功能的嵌入式終端類產(chǎn)品在日常生活中得到了廣泛的應(yīng)用,這也促進(jìn)了與該功能相關(guān)的數(shù)字音頻壓縮技術(shù)的發(fā)展,在數(shù)字音頻壓縮技術(shù)中, MP3 以其優(yōu)異的性能得到了廣泛的使用。 MP3 對(duì)音頻信號(hào)的編碼方式比較特別,使用 MP3 格式存儲(chǔ)的音頻信號(hào)與其他格式相比,占用空間小的同時(shí),還能夠保證音頻的質(zhì)量,因此是目前最流行的音樂格式之一。 MP3 播放器也因此受到人們的喜愛 ?,F(xiàn)在具備 MP3 功能已成為嵌入式終端類產(chǎn)品的發(fā)展趨勢(shì)之一。 本文介紹了一種基于 51 單片機(jī)的 MP3 播放器設(shè)計(jì)方案。它采用 ATMEL 公司專門針對(duì) MP3 設(shè)計(jì)需求出品的 AT89C51SND1C 芯片 , 文章詳細(xì)論述了 MP3 播放器的硬件和軟件結(jié)構(gòu)設(shè)計(jì)流程,采用 Protle99se 軟件畫出原理圖,制作印刷電路板,通過 Keil 編程軟件設(shè)計(jì)中的文件解碼程序,按鍵控制程序、 USB 通訊控制程序和FAT 文件管理程序進(jìn)行編程,通過電腦的串口和相應(yīng)的軟件進(jìn)行調(diào)試,實(shí)現(xiàn) MP3實(shí)時(shí)解碼過程。 文章詳細(xì)論述了播放器的軟件和硬件結(jié)構(gòu)設(shè)計(jì),此播放器具有一定的使用價(jià)值。 關(guān)鍵詞 : 單片機(jī) , MP3, AT89C51SND1C 芯片 , USB ,FAT 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) II MP3 Player Design Based on the 51 Microputer 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 pression technologies are also highly developed, MP3 is the most popular one in various digital audio pression technologies according it’s excellent performance. MP3 encoding method for audio signal, especially the use of MP3 format storage pared 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 bee one of the trends of development. This paper introduce a MP3 player design based on uses AT89C51SND1C chip,which ATMEL pany produce for MP3 design 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 munication and control procedures,and FAT file management procedures and programming procedures, use the puter39。s serial port and the corresponding software debug programs, realize realtime MP3 decoding. KEY WORDS: Microcontrololler, MP3, AT89C51SND1C chip, USB,FAT 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) III 目 錄 前 言 ....................................................................................................... 1 第 1 章 ....................................................................................... 2 ........................................................................................ 2 ............................................................................. 2 ............................................................................. 2 ............................................................................. 2 第 2 章 ....................................................................................... 4 ........................................................................................ 4 ............................................................................. 4 ............................................................................. 4 ........................................................................................ 5 ............................................................................. 5 第 3 章 ....................................................................................... 6 ........................................................................................ 6 ............................................................................. 6 ............................................................................. 6 ........................................................................................ 6 第 4 章 ....................................................................................... 7 ........................................................................................ 7 ............................................................................. 7 ............................................................................. 7 ........................................................................................ 7 第 5 章 ....................................................................................... 8 ........................................................................................ 8 ............................................................................. 8 ............................................................................. 8 ........................................................................................ 8 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) IV ............................................................................. 8 ............................................................................. 8 結(jié) 論 ....................................................................................................... 9 謝 辭 ....................................................................................................... 10 參考文獻(xiàn) ..................................................................................................11 附 錄 ..................................................................................................... 13 外文資料翻譯 ........................................................................................ 14 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) 1 前 言 【標(biāo)題上下各空一行,從這里輸入前言內(nèi)容,前言格式已設(shè)置好,不需要修改?!? 前言 應(yīng)說明本課題的意義、目的、研究范圍及要達(dá)到的技術(shù)要求;簡(jiǎn)述本課題在國(guó)內(nèi)外的發(fā)展概況及存在的問題;說明本課題的指導(dǎo)思想;闡述本課題應(yīng)解決的主要問題 和采用的研究方法 , 要求自然、概括、簡(jiǎn)潔、確切。 在文字量上要比摘要多。 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)(論文) 2 第 1 章 每章標(biāo)題下空兩行寫內(nèi)容,每章另起一頁。正文各章、節(jié)、小節(jié)標(biāo)題與前面的標(biāo)號(hào)之間均空一格,每節(jié)、小節(jié)均與前面內(nèi)容之間空一行。標(biāo)題不 要多于三級(jí)( ),若需要有四級(jí)標(biāo)題,則用 3… 來表示。如: 1. 2. 如果是陳述問題的幾個(gè)項(xiàng)目,直接使用帶括號(hào)的項(xiàng)目符號(hào),比如: 的基本方法和原則: (1) 。 (2) 。