山东大学
科技创新大赛设计论文
论文题目：基于语音模块的mp3 1
摘 要
基于ISD4004芯片的语音录放系统设计
用单片机控制语音芯片，再把单片机和语音芯片嵌入到通信设备，智能仪器，治安报警及儿童玩具中，就可做成语音播放的机器。
本文介绍了基于stc89C51单片机及ISD4004语音板为主要部件的语音录放电路的工作原理、硬件和软件的设计。ISD4004系列工作电压3V,单片录放时间8至16分钟,音质好,适用于移动电话及其他便携式电子产品中。芯片设计是基于所有操作必须由微控制器控制,操作命令可通过串行通信接口SPI送入。论文概述了语音录放电路的原理，并且在介绍语音录放系统功能的基础上，提出了系统的总体构成。针对录放系统的录音、放音部分的总体设计方案进行了论证。进一步介绍了单片机stc89C51应用在系统中的应用，分析了系统各部分的硬件及软件实现。
关键词：ISD4004 stc89C51单片机 hc05蓝牙模块 语音录放
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Abstract
The design of voice recording and playback system based on
isd4004
With the single-chip microcomputer control, and then make the
pronunciation chip microcontroller and pronunciation chip embedded in communication equipment, intelligent instruments, security alarm and children's toys, so can make a speech broadcast machine.
This paper introduces ISD4004 based on AT89C52 single chip computer and of the main parts of speech plate as the working principle of voice recording circuit and the design of hardware and software. ISD4004 series working voltage, monolithic 3V recording time 8 to 16 minutes, timbre, suitable for mobile phones and other portable electronics. Chip design is based on all the operation must by SPI into. This paper summarizes the principle of voice recording circuit, and introduces the function of speech on the basis of recording system, puts forward the general structure of the system. Recording system for the recording, playback part of the overall design scheme is demonstrated. This paper introduces microcontroller AT89C52 single applications in system, the application system were analyzed each part of hardware and software realization.
Keywords: ISD4004；stc89C51；voice recording and playback
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摘 要 .............................................. 2 ABSTRACT ............................................. 3 目 录 .............................. 错误！未定义书签。 引 言 ............................. 错误！未定义书签。
1. ISD4004介绍
1.1性能简述和引脚图 1.2引脚描述
2． SPI(串行外设接口) 2.1协议介绍 2.2 信息快进 2.3上电顺序
2.4 SPI端口的控制位 2.5 SPI控制寄存器 2.6时序 3．蓝牙模块设计
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