单片机语音播放器仿真

1、盐城工学院本科生毕业设计说明书（2010）单片机语音播放器仿真摘要：基于51单片机控制器的语音播放系统具有播放灵活、可靠性强等优点，在实际生活中得到了广泛的应用，如公共设备、智能仪表仪器、小家电等。语音提示技术是计算机语音处理技术的一种应用，属于语音再播放技术范畴。随着大规模语音处理集成电路的发展，在传统的控制领域，语音提示的应用也越来越广泛。单片机语音播放器系统是建立在语音存储系统上，一种实现播放声音的系统。语音播放器系统的实现具有多种方式，一种是利用单片集成的语音存储与回放芯片，如美国ISD公司的ISD1420等；而单片集成的语音存储与回放芯片，一般智能性较差，不容易解决音量问题，同时播放

2、的时间有限，不能灵活地变化。另一种以单片机为核心，其次以D/A转换以及带通滤波器、放大器组成的语音播放系统。因此，在多数需要语音的播放的场合中，采用了基于单片机的语音播放系统。本设计是基于51系列单片机的语音播放器设计与实现，本语音播放器系统主要包括单片机、系统供电电源、D/A、带通滤波器、放大器和喇叭。关键词：51单片机语音播放器 可靠性强 广泛的应用 Simulation of Single Chip Voice PlayerAbstract : Play system in the Single Chip Voice player with easy to play, stability

3、, and other advantages. It is widely applied in real life. Such as public facilities, smart instrumentation, small appliances, etc.Voice prompts and technology is the computer voice processing technology application, part of speech and then play the technology category. As voice processing integrate

4、d circuit development, in traditional control field, becoming widely used.Single Chip Voice Player System is built on voice storage system, a sound system for playing. There are many ways to achieve the system of Single Chip Voice Player. One is to use dedicated voice chip. Such as the ISD1420 chip

5、of American ISD Company. But the disadvantage of use dedicated voice chip is the result of intelligent is poor , resolve the problem of volume is difficult. There are very little time to complete playback. The other is mainly use of single chip microcomputer, second use by D/A, Band-pass filter, Amp

6、lifier . So we usually adopt single chip microcomputer to achieve Simulation of Single Chip Voice Player.The design is achieving through the single chip microcomputer. The system of Single Chip Voice Player has single chip microcomputer, Power supply, D/A, Band-pass filter, Amplifier, Speakers.Keywo

7、rds: 51 single chip microcomputer Stability Widely目 录1概 述11.1 课题意义11.2 语音播放系统的发展11.3 课题任务和要求22 系统总体设计22.1微控制器的原理22.1.1 AT89C52单片机介绍32.1.2 AT89C52单片机的特性32.1.3 AT89C52引脚功能及管脚电压32.1.4 AT89C52特殊功能寄存器52.1.5 AT89C52数据存储器62.1.6 AT89C52定时器262.1.7 捕获方式62.1.8 波特率发生器72.1.9 中断82.1.10时钟振荡器82.1.11FLASH存储器的编程82.1.

8、12编程方法92.1.13数据查询92.2 系统供电电源的工作原理102.3 D/A转换102.3.1 D/A概念102.3.2 D/A原理102.3.3 D/A转换的的性能参数102.3.4 DAC0832芯片112.3.5 DAC0832的工作方式132.4 带通滤波器142.4.1 带通滤波器的概念142.4.2 NE5532的基本概念与特性152.5 放大器172.5.1 放大器介绍172.5.2 LM386介绍172.6液晶显示器LCD1602192.7 I2C接口存储芯片202.7.1 I2C总线的特点202.7.2 I2C总线数据传输202.8 喇叭203. 系统硬件设计203.1 主控制器设计213.2系统供电电源电路设223.3 带通滤波器设计233.4 D/A转换电路设计233.5 功率放大电路设计243.6 4×3键盘矩阵电路设计243.7 I2C电路设计254. 系统程序流程图264.1 主程序流程图264.2 LCD1602显示函数流程图274.3 键盘扫描函数流程图275.